Hold the ` handrail for safety , eg while descending steps.抓住扶手以防倒(如下楼时).When travelling at bus or metro, please hold the handrail.坐公交或地铁时, 请抓紧扶手.Untie the handrail rope. Get ready the fenders.解开扶手绳, 准备好护舷的垫子.Fix and tig...
Hold the ` handrail for safety , eg while descending steps.抓住扶手以防倒(如下楼时).When travelling at bus or metro, please hold the handrail.坐公交或地铁时, 请抓紧扶手.Fix and tighten the scaffold board and establish protective handrail timel...
She was too exhausted and distressed to talk about the tragedy.她太累了，而且无比悲伤，没法谈论那场悲剧。I feel very alone and distressed about my problem.对自己的问题我觉得很无助、很苦恼。He was too distressed to talk.他伤心得讲不出话来。...
绝缘体的原子把电子抓得很牢.The atoms of an insulator hold their electrons very tight.晶体可以是绝缘体, 半导体, 或导体.Crystals may be insulators, semiconductors, or conductors.由绝缘体隔开任何两个导体就组成电容器.Any two conductors separated by an insulator are sai...