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...
A blackbird flew down and perched on the parapet outside his window.一只乌鸫飞下来，停在他窗外的矮墙上。The blackbird's nest contained four eggs.黑鹂巢里有四个蛋.The blackbird had a quick, wary look in case the cat was anywhere around.这只乌鸫迅速...
An excessive dose of an anti - CHE drug results in a cholinergic crisis.过量的 抗 CHE药导致胆碱能危象.These fibers are, in fact, mainly cholinergic.实际上这些纤维主要是胆碱能神经纤维.On the other hand , it may represent a direct vasodilator action u...