我们目前对该疾病的认识是通过对病变器官的仔细研究得来的。What we now know about the disease was learned by careful study of diseased organs.每年需要移植器官的人又以约百分之十五的速度递增.The demand for transplantable organs is rising about 15 percent annually.构成器官的细胞保留着它们...
索马里，人口790万，人均收入大约每周1.60英镑。Somalia, pop. 7.9 million, income per head about £1.60 a week.各民族人口如此杂居，肯定会发生冲突。The ethnic populations are so intermingled that there's bound to be conflict.粮食生产已经跟不上人口增长。Food production ha...
他在重压之下依然开朗迷人，风度优雅。He was charming, cheerful, and graceful under pressure.房顶在雪的重压下突然坍塌下来。The roof collapsed under the weight of snow.那树枝在积雪的重压下啪的一声折断了.The branch snapped off under the weight of the snow....