The book was written by Dr. Cooper a geneticist.这书是遗传学家古柏博士写得.A geneticist will evaluate the person with Marfan syndrome and other family members.遗传病医生会评估马凡氏症患者及其其他家族成员.It's one of the globe's most important fo...
The teacher should encourage the child to proceed as far as he can, and when he is stuck, ask for help.老师应该鼓励孩子尽量自己去做，遇到困难时，寻求帮助。For most of his adult life, Turner has been stuck in a coach's Catch - 22.因为特纳的大部分成年生活...
半导体器件在电子设备中能起各式各样的控制作用.Semiconductor devices can perform a variety of control functions in electronic equipment.在半导体收音机中晶体管代替了真空管.In semiconductor receivers transistors take the place of vacuum tubes.这半导体收音机小巧玲珑.This mak...