使用相同的线程来锁定和解锁文件。

Use the same thread to lock and unlock a file.

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再次尝试操作之前，必须等待，直到文件解锁。

You must wait until the files are unlocked before you try the operation again.

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再次尝试操作之前，必须等待，直到文件解锁。

You must wait until the files are unlocked before you try the operation again.

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