qián / shuǐ / yuán / xià / shuǐ / qián / bì / xū / zǐ / xì / chá / kàn / jiǎn / yā / shí / jiān / biǎo

潜水员下水前必须仔细查看减压时间表。

Divers must carefully check the decompression schedule before entering the water.