As with the mark phase, the cost of sweeping dead objects back into the free memory pool can't be completely predicted.

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。

youdao

Floating on top of the greenish pool - a mixture of 70% water from the Dead Sea and 30% water from the Red Sea - is a white scum of algae.

绿色的池面(由70%的死海水和30%的红海水混合而成)上，漂浮着一团白色的藻类。

youdao

The dead water can't keep itself clear for long time. A pool of dead water can nourish many plants and germ which may make the water turbid too.

再者不流动的所谓死水，也不会长久地保持清澈，一潭死水立刻就会滋长许多动植物，将水质变得混浊而不清。

youdao

Sounds bad, especially if you see it through the eyes of Business Insider, which has been running a dead pool of the masthead for the last month.

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The IAEA statement was released hours after Tepco temporarily shut down the cooling system in the second unit's spent fuel pool following the discovery of dead rodents near a transformer.

BBC: IAEA calls for improvements at Japan's Fukushima plant

Early Sunday, the story broke with the sad news that Rodney King was found dead at the bottom of his swimming pool in Rialta, California.

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