她用针在那块粗布上来来回回地穿进穿出。
She passed the needle through the rough cloth, back and forth.
人们在那儿来来回回地慢跑和骑自行车。
芝芝在他的椅子前面来来回回地跑，奋力拉扯皮带，似乎想跑下海滩。
ChiChi ran back and forth in front of his chair, straining at his leash as if to run down the beach.
不久，在这条他来来回回了20年的孤独的路上，长出了许多小花，四季不绝。
Before long, on the lonely road, where he had come and gone for 20 years, grew up a lot of little flowers, in all seasons endlessly.
现年79岁的他身材魁梧，在大都会博物馆的新闻发布会上显得有些不自在。他的巡回回顾展的最后一站刚刚在大都会博物馆开幕。
A physically imposing 79-year-old, he seemed slightly uncomfortable at a press conference at the Metropolitan Museum, where a travelling retrospective of his work has just opened for its final stop.
无数的鸟儿来来回回飞着。
Thousands and thousands of birds came. They flew back and forth.
于是，我就来来回回地放着幻灯片。
这篇博文引起了一组有趣的来来回回的评论。
This created an interesting back-and-forth on the comments section of the article. For instance, Mike Amundsen states.
你可以两边着力，来来回回，或者用中指画圈。
You can move side to side, back and forth, or in circles with your middle finger.
请不要在教室里来来回回地跑个不停。
他说，和海盗的谈判“来来回回变化。”
He said negotiations with the pirates had been "going up and down."
无数的鸟儿来来回回飞着。
Thousands and thousands of birds came.They flew back and forth.
这一整天，他在喂料器和枝桠之间来来回回。
All day long he flies back and forth from his branch to the feeder.
球员从欧洲，印度，亚洲和大激流来来回回的。
Players come and go, from Europe, India, Asia, Grand Rapids.
答：整个殖民地的水都是来来回回循环利用的。
他就又站起来……就这样来来回回一共16次。
He would also stand up...... so repeatedly on a total of 16 times.
如果还需要来来回回的多次批准那就更糟糕了。
Worse yet is when approval is needed several times along the way, meaning it has to be bounced back and forth a bunch of times.
不像气垫导轨那样被束缚在一维，只能来来回回移动装置。
You are not stuck, like you are there, to one dimension of going back and forth on what we call the air track.
我们最经常做的动作之一就是在我们的浏览历史中来来回回。
One of our favorite tricks involves navigating back or forth through our page history.
人们来来回回在壁垒间走着，手中握着个相机，欣赏着底下峡谷的美景。
People milled back and forth on the ramparts, cameras in hand, admiring the valleys below.
在这段时间里我学会了很多，失去了很多，哭过笑过，来来回回。
In this time frame I have learned, lost, cried and felt elation, all at varying levels.
他来来回回看了她几眼，卡门埃里西亚决定不首先把目光移开. .。
Carmen Elcira was determined not to be the first to look away.
她一个接一个地试着各种包包，来来回回在镜子前走动，对镜子里的自己皱着眉头。
She tried one after another, swaying back and forth before the mirror, frowning at her reflection.
在一些诊所，运送机器人来来回回的运送文书和药品，或者清理办公室窗户。
In some clinics transport robots ferry around paperwork and medicine; or they may be cleaning the office Windows.
在大多数市中心，试着到处开车一点也没用，不如坐上公共交通工具来来回回。
In most inner cities it is futile to try and drive anywhere so you might as well use public transport to get around.
因为他们的爱就像过山车，许许多多的来来回回兜兜转转唉，还不是编剧害的？
Because their love is like a roller coaster; a lot of backwards and forwards.
不过电话可以帮助我们减轻对彼此的思念，还有传真机——我们来来回回发送了很多数学题。
But the telephone helped, and the fax machine did too-we sent a lot of math problems back and forth.
经过了几周来来回回的商谈，克劳蒂娅最后通过邮件告诉马克，很抱歉，这笔买卖谈不成了。
After several weeks of back-and-forth, Menashe emailed Harmel to say that, regretfully, the deal was off.
经过了几周来来回回的商谈，克劳蒂娅最后通过邮件告诉马克，很抱歉，这笔买卖谈不成了。
After several weeks of back-and-forth, Menashe emailed Harmel to say that, regretfully, the deal was off.
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