流星体在快速穿过大气层时, 因磨擦而迅速加热.Moving swiftly through the atmosphere, meteoroids are heated rapidly by friction.如果流星体聚集在一起, 则每年看到的流星数都不一样.If the meteoroids are bunched together, the number of meteors seen varies from year to yea...
Recent renewed surge of the dollar has helped send the pound and the French franc to new lows.美元最近的重新增值使英镑和法朗下跌到新的低度.Dey Cookie'lows a whole lot of wounded sojers come in on de early train.他们家的厨娘说,今天早上火车运来了大批伤兵.The ...
Colic is paroxysms of crying and irritability in an infant.疝痛表现为婴儿的阵发性哭闹和烦躁不安.Conclusion US is of great value in diagnosing umbilical exudation in infant.结论超声在诊断婴儿脐部渗液病因中具有重要价值.Frogleg position in a preterm infant of 31 ...