尿液是无菌的。Urine is sterile.这个盖子严实地盖在奶瓶上,保持奶嘴无菌.This top fits over the bottle and keeps the teat sterile.手术室应该是个无菌的环境.An operating theatre should be a sterile environment....
Our teacher is known for her fairness in grading pupils.我们的老师以给学生评分公平著称.The teacher spent all weekend grading the children's papers.那位教师花了整个周末给孩子们的试卷打分数.The teachers are grading the papers.老师们正在给卷子打分数....
His unease disarmed her...他的挂念化解了她的怒气。His unease disarmed her.他的挂念化解了她的怒气。We left with a deep sense of unease, because we knew something was being hidden from us...我们离开时心里感到很不安，因为我们知道有什么事瞒着我们。...the depth of public uneas...
然而婚姻是一块感情跷跷板。Marriage, however, is an emotional seesaw.今年的价格像跷跷板一样时涨时跌.Prices have gone up and down like a seesaw this year.孩子们在玩跷跷板.The children are playing at seesaw....