道格拉斯29岁，是个技术不错的拳击手，在以前的比赛中发挥不太稳定。Douglas was a 29-year-old journeyman fighter, erratic in his previous fights.把以前的衣服随便搭配一下就能拼凑出一套。You can cobble it together from any old combination of garments.他比自己以前的最好成绩快了1秒多。He was ov...
The cervical smear test is a lifesaver.宫颈涂片检查能够帮上大忙。Relatively few bony structures can be felt in the cervical region.相对来说,颈部的骨性结构不易摸到.The cervical muscles control the movements of the head.颈肌控制着头部的动作....
Explain why barium forms peroxide but beryllium does not.解释为什么钡能形成过氧化物而铍则不能。However the toxic properties of beryllium limit its application.然而铍的毒性限制了它的作用.Toxicity problem in manufacturing and storage might be alleviated ...
The best airships were the giant Graf Zeppelin and the luxurious Hindenburg of the 1930s.最好的飞船是20世纪30年代特大的齐柏林号和豪华的兴登堡号。The reason for the British bias towards airships at this stage is not hard to deduce.弄清英国人在这个阶段如此热衷于建...