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...
These are the dog days ; watermelons are just in season.现在是伏天,西瓜正当令.I'd like some grapefruit, watermelons and peaches.我想买些柚子 、 西瓜和桃子.On Thursday, about 400 cuboid watermelons were shipped to Tokyo and Osaka.上周四, 大约有...