常見例句用作及物動(dòng)詞 (vt.)It is very important to preplan first aid and treatment for fluorine and hydro-fluoric acid exposures because of their unique properties.因?yàn)樗鼈兊莫?dú)特性質(zhì)，對(duì)氟和氫氟酸暴露的急救和處理預(yù)先計(jì)劃是非常重要的。 返回 preplan