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。
And as I shifted back and forth, engrossed in thought, I felt a bit self-conscious.
我来回转移，埋首于思考，但还有点自我意识。
Slip into a chair or remain upright, and sway back and forth.
滑进一张椅子中，或者保持直立，来回的摇晃。
I see some people changing back and forth from one and two.
我看到一些人在一和二之间来回改动。
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。
After a back and forth, we mentioned the Mandarin name and got on the road.
这样打了一个回合之后，我们提到了大厦的中文名字，出租车这才顺利地上了路。
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。
To start, stand with one foot in front of the other and shift your weight back and forth (versus around in a circle).
开始时，双脚前后站着，把身体的重量前后甩动（与绕圈甩动不同）。
Breathe in and out; then switch back and forth.
吸入、呼出，然后再切换往复。
Paul already was starting this connection, and he's writing letters back and forth.
保罗已经开始建立这种联系，他经常写信回信。
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。
A man got into the well and ran back and forth to make it work.
一个男人进入舱内然后来回跑动从而使其工作。
He ran back and forth and did not touch the clown with his feet.
他来回地跑而且没有用他的脚碰小丑。
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。
We pulled the rope back and forth across a hole full of water and mud.
我们把绳子拉过来又拉过去，中间是一个大坑，坑里满是污水和泥巴。
People and cars go back and forth in the busy streets, calm as the reality.
街道上人来人往，车水马龙，现实就是这样的平静。
Our life goes back and forth, up and down.
我们的生命前后上下起伏。
Bat few back and forth until both Bird and Rat got tired of him.
蝙蝠飞来飞去。直到鸟和老鼠都烦他了。
Vehicles moved back and forth in front of me, and they looked like very busy.
车子在我面前开来开去，好像很忙似的。
Back and forth method is a new tool in study of model theory and its application.
向前向后方法是模型论及其应用研究中的一个新的工具。
Back-and-forth method is an important tool for studying model theory and its application.
向前向后方法是模型论及其应用研究中的一个很重要的工具。
This is just one example of the creative back-and-forth between lore and game design.
这只不过是我们“往来于背景设定和游戏设计”的一个例子。
We travel back and forth all the time between Canada and England.
我们总是在加拿大和英格兰两地来回旅行。
Since there was no direct transportation between my home and the newspaper office, a fellow worker drove me back and forth to work.
由于在我家和报馆之间没有直接的交通路线，一位同事开车送我上下班。
Since there was no direct transportation between my home and the newspaper office, a fellow worker drove me back and forth to work.
由于在我家和报馆之间没有直接的交通路线，一位同事开车送我上下班。
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