A hydrocarbon was known to be either an alkene or alkane.某碳氢化合物已知可能是烯烃或是烷烃.The hydrocarbon must be an alkene.这个碳氢化合物必定是烯烃.The betaine will collapse to the alkene only when these two functions are eclipsed.只有当这两个基团移至重迭位置时...
从务实角度来说，音乐电视网的生存依赖于把年轻人市场卖给广告商。Pragmatically, MTV's survival depends on selling the youth market to advertisers.他容易冲动，很难成为值得依赖的首相。He is too impulsive to be a responsible prime minister.她脾气变得更坏，对他的依赖更重了。She had grown...
Striker Alan Smith was guilty of two glaring misses.前锋艾伦·史密斯两次严重失误，将球射偏。After more misses, they finally put two arrows into the lion's chest.又射偏了几次之后,他们终于把两支箭射入了狮子的胸膛.He misses not having enough books because he...
Make sure that you execute all movements smoothly and without jerking.一定要保证所有动作自然流畅，不要一顿一顿的。The replumbing and rewiring of the flat ran very smoothly.公寓里管道和电线的更换工作都进展得非常顺利。The system was clearly not functioning smoothly ...
He gave a snort of derision.他哼了一下鼻子表示嘲笑.Children dread the derision of their playmates.孩子们害怕受到同伴的嘲笑.He tried to calm them, but was greeted with shouts of derision.他试图让他们平静下来，但却招致他们大声的嘲笑。Americans speak with derision of t...