非离子型表面活性剂有聚氧乙烯缩合物糖酯和烷基胺氧化物.Nonionics include polyoxyethylene condensates, sucrose esters and alkyl amine oxides.解决这一问题的一般办法是避免使用烷基卤.The general answer to this problem is to avoid alkyl halides.非离子型表面活性剂有聚氧乙烯缩合物, 糖酯和烷基胺氧化...
孕妇酗酒可能会危及腹中胎儿。Pregnant women who are heavy drinkers risk damaging the unborn foetus.这是非法的，可能会危及他人的生命。It is illegal and could endanger other people's lives.有毒废物可能危及生命，毒死鱼类。Toxic waste could endanger lives and poison ...
She heard a floorboard creak upstairs.她听见楼上的地板发出嘎吱嘎吱的响声。A shadow moves across the wall. A floorboard creaks.一道影子从墙上飘过, 地板发出吱吱的响声.This kind of floorBoard gives people a feeling of smoothness and quietness.这种地板木给人一种顺滑、安静的感...