Application of the cis - trans test defines the genetic unit of function, the cistron.顺? 反 测验可以用来确定遗传的功能单位――顺反子.Rockwell Automation defines sustainable production as cleaner, safer more energy - efficient operations.罗克韦尔...
“瞧，又来了不是？又惹孩子伤心！”雪莉说。"There you go again, upsetting the child!" said Shirley.看到他们这个样子可真让我伤心。It really breaks my heart to see them this way.那笔钱带来的只有伤心、痛苦和悲剧。All that money brought nothing but sadness and misery and traged...
这项研究工作毫无瑕疵，怎样称赞都不过分。It is difficult to praise this immaculately researched work too highly.你是个好女孩儿，莱蒂，你的善良值得称赞。You're a nice girl, Lettie, and your kind heart does you credit.人们称赞他的热情与开明。He was praised for his enthu...