木炭和金刚石都是炭的同素异形物Charcoal and diamond are allotropes of carbon.把元素中的多晶现象称为同素异构性.Polymorphism in elements is called allotropy.纯钛以两种同素异形的形式存在.Titanium in the pure state can exist in either of two allotropic forms....
I'll leave you to undertake an important mission.我要让你承担一项重要使命。I want you to undertake all the responsibility.我要你承担所有的责任。I repeat that we cannot undertake the task.我再说一遍, 我们不能承担这项任务。We want all our members to underta...
Britain has the largest and most flourishing fox population in Europe.英国拥有欧洲最大也是最具繁殖能力的狐狸种群。Few businesses are flourishing in the present economic climate.在目前的经济气候下，很少有企业兴旺发达。Our cause is flourishing and has no lack of s...