Wally was laughing fit to burst.沃利快要笑破肚皮了.He carried on telling a joke, laughing his head off.他继续讲笑话，自己笑得前仰后合。When I stepped into her box, Marguerite was laughing uproariously.当我走进包厢的时候, 玛格丽特放声大笑.We all just cracked up l...
...a demand for a greater choice of effective contraceptive methods...对于更为多样的有效避孕方法的需求It and removed by a hysteroscope and is expected to be aand permanent intratubal contraceptive device.结果表明,输卵管聚乙烯节育栓有望成为经宫颈途径持久的避孕器.Th...
Currency-conversion costs remain one of the biggest obstacles to cross-border trade.货币兑换成本仍是跨境贸易的最大障碍之一。Creative people are usually very determined and thrive on overcoming obstacles.富有创造力的人一般都意志非常坚定，能不断克服困难，事业蒸蒸日上。To su...
这一点是指其身体上的发光斑或发光点.This may show as luminescent blotches or spots on the body.我们将它称为光束的 “ 光斑尺寸 ”.We will consequently refer to it as the beam'spot size ".如果孔是圆形的, 那么在屏幕上出现一圆形光斑.If the aperture is circular, a circular...
Language is something which fundamentally distinguishes humans from animals.语言是将人类与动物区分开来的基本特征。It is shocking that humans can behave with such bestiality towards others.令人震惊的是，人竟然能对同类下此毒手。Variation among humans is limite...