jīng guò / cháng shí jiān / shēn qián / hòu / tā / àn zhào / guī dìng / fēn jiē duàn / shàng fú / yǐ / bì miǎn / lí huàn / jiǎn yā zhèng

经过长时间深潜后，他按照规定分阶段上浮，以避免罹患减压症。

After a long deep dive, he ascended in stages as required to avoid getting decompression sickness.