按下按钮，微电脑就锁住其它楼层的垃圾槽的门，转动相对应的容器使其对准垃圾槽。
A the press of a button, a microcomputer lock all other floors'chute doors and sets the recyclingcontainer turning until the right box comes under the chute.
通常线程ID会得到重用，因此可能会出现这样的情况，即一个线程已经死亡，却没有释放相应的槽位，并在垃圾收集器释放该槽位之前，再次使用了这个线程ID并为其分配一个新的槽位。
Thread IDs are reused often, so there could be a case where a thread died without releasing the slot, and comes up and allocates a new slot before garbage collector could free it.
垃圾桶就在厨房里洗碗槽的下面。
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