Synchronize blocks both the main thread and the calling thread while it's performing the procedure that you pass to it, so overusing it can detract from the benefits of multi-threading.
同步阻塞主线程和调用线程执行过程，你传递给它，所以过度使用它可以减损多线程的好处。
Synchronize blocks both the main thread and the calling thread while it's performing the procedure that you pass to it, so overusing it can detract from the benefits of multi-threading.
同步阻塞主线程和调用线程执行过程，你传递给它，所以过度使用它可以减损多线程的好处。
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