Abstain from sex or use condoms.禁绝性事或使用安全套。Do you drink alcohol, smoke, or abstain?你喝酒抽烟吗，还是烟酒不沾？His doctor ordered him to abstain from beer and wine.他的医生嘱咐他戒酒....
这些火灾很可能会彻底毁掉这片土地上的森林。The fires are likely to permanently deforest the land.空气中弥漫着火灾产生的刺鼻浓烟。The air is thick with acrid smoke from the fires.大部分住户在火灾发生前就已经离开。Most of the occupants had left before the fire broke out....
大多数人的脸不对称。Most people's faces are asymmetric.迈洛的八字胡生得就是倒霉相,左右两撇一点儿也不对称.Milo's mustache was unfortunate because the separated halves never matched.我们未曾涉及不对称碳原子.We have made no reference to asymmetric carbon atom...