Sarah and I had a great time while the kids were away.
萨拉和我在孩子们不在时度过了一段美好的时光。
Now they are introducing new Barbies with three slightly different body shapes, while the original, tall and thin Barbies will continue to be sold.
现在他们推出了三种体型略有不同的新芭比娃娃，而高高瘦瘦的原版芭比娃娃将继续销售。
The tortoise wins the race while the hare is sleeping.
兔子在睡觉时，乌龟赢得了比赛。
He held his breath while the results were read out.
宣读结果时，他屏住了呼吸。
Heidi ran over to her beloved fir-trees and danced about, while the wind was howling in the branches.
海蒂跑向她心爱的枞树，在风声呼啸的树枝间蹦蹦跳跳。
The former offers more excitement and convenience while the latter offers a cleaner, quieter and often friendlier place to live.
前者提供了更多的刺激和便利，而后者提供了一个更干净、更安静、通常也更友好的居住环境。
I got in an hour's work while the baby was asleep.
我趁孩子睡觉抽空干了一小时的活。
Father shot the breeze with his neighbour while the children were playing.
孩子们在玩时，父亲与邻居聊天儿。
Every once in a while the instructor makes a witty remark, causing others in the class to laugh.
每隔一段时间，老师就会说一句诙谐的话，让班里的其他人都笑了起来。
Keep away from the doors while the train is moving.
列车运行时请远离车门。
He flew with them through night and cloud and storm, for the sport of it, while the flock huddled miserably on the ground.
他与他们一道飞行，穿越黑夜、云层和暴风雨，就像做游戏一样，而这时，鸟群却可怜地在地上挤作一堆。
He kept smiling while the others complained.
其他人都在抱怨，他却一直保持微笑。
An estimated 99.85 percent of the mass of our solar system is contained within the Sun, while the planets collectively make up most of the remaining 0.15 percent.
太阳占据了太阳系总质量的大约99.85%，而在剩余的0.15%中，行星占据了大部分。
You can even take a short rest while the car drives itself.
汽车自动驾驶的时候，你甚至可以短暂休息一会儿。
The mother walked into the bedroom quietly while the baby was sleeping.
婴儿睡觉时，母亲悄悄地走进了卧室。
Eggs serve two purposes. The whites help the cake to rise, while the yolks give it a creamy texture.
鸡蛋有两个作用。蛋清有助于蛋糕发酵，而蛋黄则使蛋糕口感丝滑。
He found that one falcon had already been able to fly high in the sky, while the other one was staying at the branch of a tree quietly without moving.
他发现一只猎鹰已经能在高空中飞行，但另一只静静地待在树枝上一动不动。
The children clapped out a regular time while the teacher played the tune.
老师弹曲子时，孩子们有节奏地击掌打拍子。
Don't open the door while the train is in motion.
列车运行时，请勿打开车门。
The modest receive benefit, while the conceited reap failure.
谦受益， 满招损。
You should strike while the iron is hot.
你要打铁趁热，趁机行事。
Come gentle sun, while the cuckoo sings.
温柔的阳光普照大地，布谷鸟儿把歌唱哟。
The squirrel was diligent while the frog was lazy.
松鼠很勤奋而青蛙很懒惰。
China needs the world, while the world also needs China.
中国离不开世界，世界也需要中国。
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