Eugenics has a biological significance.优生学具有生物学上的意义.A distinction is often made between " positive " and " negative " eugenics.对 “ 积极 ” 优生学和 “ 消极 ” 优生学往往加以区分.An example of negative eugenics would be the attempt to eradic...
There's always tons of scrap paper in Dad's office.爸爸的办公室里总有大量的废纸。Three hundred thousand tons of cereals are needed to replenish stocks.需要30万吨谷类补充库存。Hundreds of tons of oil spilled into the sea.数百吨石油溢出流入大海。...
只要所有垂直面在一条线上，图案看起来就会很整齐。As long as the verticals align, the design will look regular.可确信光线仅在垂直面内作曲线传播.Light can be trusted to curve only in a vertical plane.即使承受力,通常反力还是在垂直面内维持固定不变.A reaction generally remains fixed in e...
Where's your book? Take it out and turn to page 4.你的书呢？拿出来，翻到第4页。There was no one to turn to, no one to tell.没人可以求助，没人可以诉说。To order, turn to page 236.如需订购，参见236页。...
If she ever fancies a job swap, I could be interested.如果她想和别人互换工作，我会很感兴趣的。She fancies herself a bohemian.她自以为是放荡不羁的艺术家。He fancies himself, hoping to get that job.他自视甚高,竟想得到那份工作....