diff --git a/en/application-dev/reference/apis/js-apis-filemanager.md b/en/application-dev/reference/apis/js-apis-filemanager.md
index c3b738b12c4e0b3f1ea674feb3b5e25304ba9f9d..fe5143ca5a4415bc01cc388b2859f1c59800568c 100644
--- a/en/application-dev/reference/apis/js-apis-filemanager.md
+++ b/en/application-dev/reference/apis/js-apis-filemanager.md
@@ -141,7 +141,7 @@ Obtains information about the files in the second-level directory in asynchronou
   |Not a directory            | 20     | The object specified by the URI is not a directory.|
 
 ```js
-// Call listFile() and getRoot() to obtain the file UIRs.
+// Call listFile() and getRoot() to obtain the file URIs.
 let media_path = file.uri
 filemanager.listFile(media_path, "file", (err, fileInfo) => {
     if(Array.isArray(fileInfo)) {
diff --git a/en/application-dev/reference/apis/js-apis-system-bluetooth.md b/en/application-dev/reference/apis/js-apis-system-bluetooth.md
index c2b517aa254b423f6e1467d3994ae12592fd45fb..27223da59dd798215ff27a2a6bad0f49282097c9 100644
--- a/en/application-dev/reference/apis/js-apis-system-bluetooth.md
+++ b/en/application-dev/reference/apis/js-apis-system-bluetooth.md
@@ -18,21 +18,22 @@ import bluetooth from '@system.bluetooth';
 
 ## bluetooth.startBLEScan(OBJECT)
 
-Scans for Bluetooth Low Energy (BLE) devices nearby. This operation consumes system resources. Call [bluetooth.stopBLEScan](#bluetoothstopblescanobject) to stop the scan after BLE devices are detected and connected.
+Scans for Bluetooth Low Energy (BLE) devices nearby. This operation consumes system resources. Call [bluetooth.stopBLEScan](#bluetoothstopblescanobject) to stop the scan after a BLE device is detected and connected.
 
 **Required permissions**: ohos.permission.DISCOVER_BLUETOOTH and ohos.permission.LOCATION
 
 **System capability**: SystemCapability.Communication.Bluetooth.Lite
 
 **Parameters**
+
 **Table 1** StartBLEScanOptions
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| interval | number | No| Interval for reporting device information, in milliseconds. The default value is **0**, which means to report detected devices immediately and report other information at the given interval.|
+| interval | number | No| Interval for reporting device information, in milliseconds. The default value is **0**, which means to report the detected device immediately and report other information at the given interval.|
 | success | Function | No| Called when the operation is successful.|
 | fail | Function | No| Called when the operation fails.|
-| complete | Function | No| Called when the API call is complete.|
+| complete | Function | No| Called when the execution is complete.|
 
 **Example**
 
@@ -60,13 +61,14 @@ Stops scanning for BLE devices nearby. This API is used with [bluetooth.startBLE
 **System capability**: SystemCapability.Communication.Bluetooth.Lite
 
 **Parameters**
+
 **Table 2** StopBLEScanOptions
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | success | Function | No| Called when the operation is successful.|
 | fail | Function | No| Called when the operation fails.|
-| complete | Function | No| Called when the API call is complete.|
+| complete | Function | No| Called when the execution is complete.|
 
 **Example**
 
@@ -87,18 +89,19 @@ Stops scanning for BLE devices nearby. This API is used with [bluetooth.startBLE
 
 ## bluetooth.subscribeBLEFound(OBJECT)
 
-Subscribes to the newly detected BLE devices. If this API is called multiple times, the last call takes effect.
+Subscribes to the newly detected BLE device. If this API is called multiple times, the last call takes effect.
 
 **Required permissions**: ohos.permission.DISCOVER_BLUETOOTH and ohos.permission.LOCATION
 
 **System capability**: SystemCapability.Communication.Bluetooth.Lite
 
 **Parameters**
+
 **Table 3** SubscribeBLEFoundOptions
 
-| Parameters| Type| Mandatory| Description|
+| Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| success | Function | Yes| Called to report newly detected devices.|
+| success | Function | Yes| Called to report the newly detected device.|
 | fail | Function | No| Called when the operation fails.|
 
 **Table 4** Return value in success
@@ -162,7 +165,7 @@ Unsubscribes from the newly detected devices.
 | 1102 | The specified device is not found.|
 | 1103 | Connection failed.|
 | 1104 | The specified service is not found.|
-| 1105 | The specified characteristics value is not found.|
+| 1105 | The specified characteristic value is not found.|
 | 1106 | The Bluetooth device is disconnected.|
 | 1107 | The characteristic value does not support this operation.|
 | 1108 | Other exceptions reported by the system.|
diff --git a/en/application-dev/reference/apis/js-apis-volumemanager.md b/en/application-dev/reference/apis/js-apis-volumemanager.md
index 247a14edecced6f77df4d458238bd51de2e02ddc..e4e44b0db405165911335d3ee12a152a6e06f52a 100644
--- a/en/application-dev/reference/apis/js-apis-volumemanager.md
+++ b/en/application-dev/reference/apis/js-apis-volumemanager.md
@@ -33,7 +33,7 @@ Asynchronously obtains information about all available volumes. This method uses
   });
   ```
 
-## volumemanager.getAllVolumes<sup>9+</sup>
+## volumemanager.getAllVolumes
 
 getAllVolumes(callback: AsyncCallback&lt;Array&lt;Volume&gt;&gt;): void
 
@@ -171,9 +171,9 @@ Asynchronously unmounts a volume. This method uses a callback to return the resu
 
 | Name       | Type   | Description                |
 | ----------- | ------- | -------------------- |
-| id<sup>9+</sup>          | number  | Volume ID.                |
-| uuid<sup>9+</sup>        | string  | Universally unique identifier (UUID) of the volume.              |
-| description<sup>9+</sup> | string  | Description of the volume.          |
-| removable<sup>9+</sup> | boolean | Whether the volume is a removable storage device.|
-| state<sup>9+</sup>       | int     | Current volume status.          |
-| path<sup>9+</sup>        | string  | Mount address of the volume.        |
+| id          | number  | Volume ID.                |
+| uuid        | string  | Universally unique identifier (UUID) of the volume.              |
+| description | string  | Description of the volume.          |
+| removable | boolean | Whether the volume is a removable storage device.|
+| state       | int     | Current volume status.          |
+| path        | string  | Mount address of the volume.        |