At maturity the root system is extensively nodulated.在成熟时,根系普遍具有根瘤.Humans experience a delayed maturity; we arrive at all stages of life later than other mammals.人类发育较缓——在生命的各个阶段，我们都晚于其他哺乳动物。Moreover, as time to maturity...
Lacking self-confidence and maturity, many teenagers are left feeling very vulnerable.许多十几岁的孩子既缺乏自信又不够懂事，所以感情上十分脆弱。Girls generally reach sexual maturity two years earlier than boys.通常女孩性发育成熟要比男孩早两年。Customers are told wha...
Alcoholism often leads to the alienation of family and friends.酗酒常常导致家庭和朋友间的疏远.Excessive drinking induces alcoholism.饮酒过度会引起酒精中毒.The doctor wrote a treatise on alcoholism.那位医生写了一篇关于酗酒问题的论文....