qián shuǐ yuán / bì xū / zūn xún / jiǎn yā chéng xù / shàng fú / yǐ miǎn / huàn shàng / jiǎn yā bìng

潜水员必须遵循减压程序上浮，以免患上减压病。

Divers must follow the decompression schedule when ascending to avoid decompression sickness.