shí / yàn / rén / yuán / chǔ / lǐ / fú / huà / qīng / shí / bì / xū / chuān / dài / fáng / hù / zhuāng / bèi

实验人员处理氟化氢时必须穿戴防护装备。

Laboratory personnel must wear protective equipment when handling hydrofluoric acid.