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....
Peregrine falcons usually pluck the feathers and strip the flesh off their bird prey.游隼捕到鸟类猎物时,通常是先拔掉它们的羽毛,再把肉撕下来.Those falcons will think twice before they mess with us.下次那些猎鹰再惹我们,可要想清楚了!Falcons, found worldwide, common...
来自世界各地的电视工作者和新闻记者齐聚一堂。There were television crews and pressmen from all around the world.来自投票站的消息称投票率很高。A high turnout was reported at the polling booths.来自首都洛美的报道称，部队驻扎在大街上。Reports from the capital, Lome, say troops are...