如果癌症在早期发现，预后效果还是非常好的。If the cancer is caught early the prognosis is excellent.警方干预后，局势平息下来。The situation calmed down when police intervened.预后应慎重.The prognosis is always guarded....
They offer tips on topics such as home safety.他们就家居安全等问题提供建议。The Oxford Chemistry Primers aim to cover important topics in organic chemistry.《牛津化学初级读本》丛书旨在论述有机化学中的重要问题。They talked amiably and easily about a range of topi...
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...