A bus shuttles passengers back and forth from the station to the terminal.
一辆公共汽车在火车站和公共汽车终点站之间往返运送旅客。
他来回踱步。
The windshield wipers clacked back and forth.
挡风玻璃上的刮雨器来回刮着，发出咔嚓声。
She passed the needle through the rough cloth, back and forth.
她用针在那块粗布上来来回回地穿进穿出。
A flock of sheep is walking back and forth on the grassland.
一群羊在草原上来回走动。
They continue calling back and forth until they all find each other again.
他们不停地来回打电话，直到他们再次找到彼此。
Don't move those flowerpots back and forth.
你别来回摆弄那几盆花了。
It'll have to make three trips back and forth for the three trees.
那样就需要为了这三棵树而往返三次。
She rocks back and forth on her chair like a mischievous child.
她在椅子上前后晃动，像个调皮的孩子。
He continued walking back and forth, muttering to himself; he had forgotten the King entirely.
他不断地走来走去，喃喃自语；他完全忘记了国王。
The buoy floated back and forth in the water.
浮标在水里漂来漂去。
He rocked back and forth in his rocking chair.
他坐在摇椅里前后摇晃着。
So, you see how we are oscillating back and forth?
你可以看到我们如何前后摆动？
It flies back and forth, stopping just short of his chin.
它来回摆动，将将在他下巴前停住。
The Internet is more than just passing bits back and forth.
互联网不仅仅是来回传送比特。
Then I let it sink and began to drag it slowly back and forth.
接着我将它沉入水中，开始缓慢地来回拖动。
example：Someone was pacing back and forth behind the curtain.
有人在幕布后踱来踱去.
They may move back and forth between the U.S. and the home country.
他们可能在美国和自己的祖国之间搬来搬去。
The brothers spent the night going back and forth with their rice.
兄弟俩用整夜的时间往返运送大米。
The custodian could see him darting back and forth in the darkness.
看守人看见他在黑暗中奔来跑去。
All day long he flies back and forth from his branch to the feeder.
这一整天，他在喂料器和枝桠之间来来回回。
This back and forth loading takes time and may not be what you want.
这样的来回加载很耗时，而且可能也不是你所期望的。
Waiters came back and forth to bring cocktails to the rich customers.
侍者们忙前忙后的为这些富有的客人们送上鸡尾酒。
"Within an hour," she wrote, "we were sending messages back and forth."
她写道：“在一个小时里，我们互相发了好多短信。”
“Within an hour,” she wrote, “we were sending messages back and forth.”
她写道：“在一个小时里，我们互相发了好多短信。
By applying a current, they were able to shuttle the particle back and forth.
使用电流，他们可以来回地移动毫微管内的铁粒子。
We'll continue to go back and forth with them. We feel optimistic as well.
我们将继续和他们进一步的谈下去，我们也感到非常乐观。
There has been so much controversy and back and forth on this over many years.
许多年来，这一问题引发了巨大的争议，出现了许多反复。
Throughout the morning, she moved back and forth between the kitchen and the living room.
整个早上，她在厨房和起居室之间来回奔走。
Throughout the morning, she moved back and forth between the kitchen and the living room.
整个早上，她在厨房和起居室之间来回奔走。
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