September is here, bringing with it a chill in the mornings.9月到了,早晨已有了寒意.The South African mailboat arrived on Friday mornings unless bad weather intervened.除非受恶劣天气干扰，南非邮船一般在星期五上午抵达。In the mornings the sky appeared a hea...
The South African mailboat arrived on Friday mornings unless bad weather intervened.除非受恶劣天气干扰，南非邮船一般在星期五上午抵达。He is loath to get out of bed on cold mornings.在寒冷的早晨他讨厌起床.In the mornings the sky appeared a heavy shade of mo...
胚胎的性别早在受精时就决定了。The sex of the embryo is predetermined at fertilization.收集母牛胚胎的方法有两种, 一种是直接通过产道, 另一种是施用外科手术.There are two methods of collecting cow embryos -- directly through the birth canal, or surgically.目的: 探索制作小鼠多倍体胚...
The area where most refugees are waiting is exposed to the elements.大多数难民等待救济的地方都不能挡风遮雨。"I have never knowingly exposed any patient to needless risks," he said.他说：“我从未故意将任何病人置于不必要的风险境地。”He has simply been exposed as an a...
The candidates are already limbering up for the election campaign.各候选人已经在为竞选运动热身了.We start by doing limbering up exercises and then go on to do the aerobics.我们先做些柔软运动灵活四肢,再做有氧运动....