// 入栈后栈仍保持单调递增（因为小的都被弹走了）
Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
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Жители Санкт-Петербурга устроили «крысогон»17:52，详情可参考夫子
Мощный удар Израиля по Ирану попал на видео09:41
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