She instructs music once a week at a middle school.她在中学每周教一次音乐课.She instructs a class in chemistry.她给某班学生上化学课.Dr. Williams instructs us in botany.威廉博士教我们植物学.Joseph instructs a class in woodwork.约瑟夫教一个班木工课。...
She instructs music once a week at a middle school.她在中学每周教一次音乐课.Dr. Williams instructs us in botany.威廉博士教我们植物学.She instructs a class in chemistry.她给某班学生上化学课....
In the reserves of Zimbabwe and South Africa, annual culls are already routine.在津巴布韦和南非的自然保护区，每年的选择性捕杀已成惯例。Big business culls the brightest from among college graduates.大企业从大学毕业生中选拔最优秀的人材....
This adulteration of food must stop.必须制止在食品中搀假。This adulteration of food must be stopped.必须制止在食品中搀假.Adulteration with petroleum is permitted in certain circumstances.在某种场合下,允许与石油掺合起来使用....