与标志阶段类似，将死对象清理回自由内存池的耗费也不能完全预测。
As with the mark phase, the cost of sweeping dead objects back into the free memory pool can't be completely predicted.
如果团体的成员身份的其他标志可以被强化，那么传统的标志即使不完全消失，也会弱化。
If other brands of group membership can be strengthened, the traditional ones may diminish, even if they do not disappear completely.
这似乎是对这中世纪的祸害在科技上取得的完全胜利的最后标志。
That seemed the ultimate symbol of technology's triumph over a medieval scourge.
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