The mother sponged crayon marks off.母亲用湿海绵擦去了痕迹.He coloured the picture with a yellow crayon.他用黄蜡笔给画着色.He coloured the picture with crayon.他用蜡笔给画上色....
她在药物学系做研究助理.She took up a post as research assistant in the Department of Pharmacology.它涵盖对神经心理学与行为药物学的动物行为知识的一些应用.It covers some applications of animal - behavior knowledge to neuropsychology and behavioral pharmacology...
He is unpredictable, weeping one moment, laughing the next.他喜怒无常,一会儿哭,一会儿笑。No-one knows where they stand with him; he is utterly unpredictable.谁也不知道他怎样看待他们;他是个完全不可捉摸的人。She was unpredictable, explosive, impulsive and easi...