The melancholiac has fallen into a fixed condition of despondency.忧郁症患者.这种病人陷入沮丧.Now he bathed himself in despondency.此刻他就沉浸在怅惘之中." To collect what's left over ,'smiled Wu Sun - fu , his look of despondency van...
细胞的这种向里推进标志着原肠胚形成的开始.This pushing - in of cells marks the start of gastrulation.外胚层囊胚的外层,在原肠胚形成之后生后外胚层组织.The outer layer of a blastula that gives rise to the ectoderm after gastrulation....
A metering tank is an elementary method of measuring volume flow.量筒是测定容积流量的基本方法之一.Practical flow - metering devices have become available commercially.实用的流量测量装置已在工业上使用.A nearly constant air - fuel ratio is maintained by ...
The rules state that samples must be enclosed in two watertight containers.规则要求样本必须装在两个水密容器中。We're giving away 2000 free samples.我们正免费发放2,000份样品。They took samples of my blood.他们取了我的血样。...