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.getAllVolumes9+
+## volumemanager.getAllVolumes
getAllVolumes(callback: AsyncCallback<Array<Volume>>): void
@@ -171,9 +171,9 @@ Asynchronously unmounts a volume. This method uses a callback to return the resu
| Name | Type | Description |
| ----------- | ------- | -------------------- |
-| id9+ | number | Volume ID. |
-| uuid9+ | string | Universally unique identifier (UUID) of the volume. |
-| description9+ | string | Description of the volume. |
-| removable9+ | boolean | Whether the volume is a removable storage device.|
-| state9+ | int | Current volume status. |
-| path9+ | 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. |