三是要做相知相亲的人文伙伴。中德都是拥有深厚文化底蕴的大国，双方要加强文明互学互鉴，密切人文交流，巩固中德友好民意基础。
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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