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。
A flock of sheep is walking back and forth on the grassland.
一群羊在草原上来回走动。
He walked back and forth on the path.
他在小路上来来回回的走着。
She walked back and forth on the path.
她在小路上来回的走着。
The shuttle flies back and forth on the loom.
织布机上梭子来回飞动。
The shuttle flies back and forth on the loom.
有梭织机是多种多样的，它可分为三类。
You could even do this go back and forth on the rope.
你甚至可以,在绳子上前后行走。
Children like to go back and forth on the swings in the park.
孩子们喜欢在公园的秋千上荡来荡去。
She noticed the other bird moving back and forth on the edge of the cage.
她注意到另一只鸟儿在笼边扑闪着翅膀。
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。
In particular, long-lived objects will be copied back and forth on every collection.
特别是，长寿的对象在每次收集时都要来回复制。
People milled back and forth on the ramparts, cameras in hand, admiring the valleys below.
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。
It seems we're always going back and forth on the subject of Facebook's usefulness at work.
我们似乎总是在Facebook的工作实用性这一话题上徘徊。
Three moistened mops were moved back and forth on the floor until it was almost like a mirror.
三个被弄湿的墩布被在地板上来回地移动，直到它几乎像一面镜子。
A glass bottle is rolling back and forth on the floor, and the air is thick with cigarette smoke.
一个玻璃酒瓶在地上滚来滚去，空气里弥漫着香烟味儿。
Behind them, young men ran back and forth on the basketball courts as groups of teenagers looked on.
在这些孩子身后，年轻人正在篮球场上来回奔跑，旁边还有一群驻足观看。
You are not stuck, like you are there, to one dimension of going back and forth on what we call the air track.
不像气垫导轨那样被束缚在一维，只能来来回回移动装置。
That's a tricky question and I've gone back and forth on it a couple of times and I don't think there's a perfect answer.
这个问题不好回答，我已经就该问题思考很长时间了，但尚未得到完美的答案。
I went back and forth on this for years, but I now think that I understand that file attributes are extremely useful for a GUI environment.
我在这个问题上已经来回折腾了几年，但我现在认为我理解文件属性对于GUI环境是极其有用的。
He smiled often throughout his presentation, paced back and forth on stage and cracked jokes about the white iPhone that Apple has yet to sell.
在整个发布会产品展示的过程中他时常面带微笑，在舞台上踱来踱去而且还讲了一些有关苹果公司并未进行售卖的白色iPhone的笑话。
Finally, use the "rule of three": if you've gone back and forth on a topic three times and you're still confused or have questions, pick up the phone.
最后，使用“三次原则”：如果你已经在一个主题上来回思考了三次，但你仍有困惑或是问题，拿起电话打过去。
First, I put dirty clothes into the pot, and then they put a lot of detergent and laundry detergent, after wet my hard back and forth on a washboard rubbing.
首先，我把脏衣服都放进了盆子里，然后又放了好多的洗衣粉和洗衣液，打湿后我使劲在洗衣板上来回搓动。
Any further back and forth on that email that includes the Cc: Everybody address will be added to the thread. People who visit the page can add their own comments.
所有包括Cc： Everybody地址的邮件往来都会以跟帖的形式添加到一个页面中，访问该页面的人也可以添加评论。
The artists use a small spoon to scoop up the sugar melted, spread rapidly back and forth on the SLATE, draw shapes. Then use a small shovel scooped sugar Painting.
艺人使用小汤勺舀起溶化了的糖水，在石板上飞快地来回浇铸，画出造型，并用小铲刀将糖画铲起。
First, there was what Dad called the 'log roll' in which he would roll back and forth on the living room carpet while we kids had to jump over him without getting nabbed.
首先，是爸爸叫做“滚原木”的游戏，他在客厅的地毯上滚来滚去，我们会跳过他而不被捉到。
First, there was what Dad called the 'log roll' in which he would roll back and forth on the living room carpet while we kids had to jump over him without getting nabbed.
首先，是爸爸叫做“滚原木”的游戏，他在客厅的地毯上滚来滚去，我们会跳过他而不被捉到。
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