release()函数用于释放一个线程锁（解锁）。
release()
范例可以参考ThreadCondition.notify()章节的内容。
在使用wait()之后需要释放当前条件对象的线程锁（解锁）。
{@fun/Threads/ThreadCondition/notify notify}, {@fun/Threads/ThreadCondition/notifyAll notifyAll}, {@fun/Threads/ThreadCondition/wait wait}, {@fun/Threads/ThreadCondition/acquire acquire}
acquire ThreadDict