accumulated是什么意思

accumulate

[英][?kju:mj?le?t][美][?kjumj?let]

vt.& vi.堆积，积累;

vi.（数量）逐渐增加，（质量）渐渐提高;

过去式：accumulated

过去分词：accumulated

How the hell did pure oxygen accumulate in the chest cavity?

纯氧究竟怎样在胸腔里累积？