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。

youdao

The rotation of the pole caused the flag to move back and forth as if rippling in the breeze even though there's no air on the moon.

旗杆的转动使得旗帜前后抖动，看上去好像是被风吹动的，即使月球上没有空气。

youdao

Optimism starts with what may be the most extraordinary of human talents: mental time travel, the ability to move back and forth through time and space in one's mind.

乐观主义可能起始于最卓绝的人类天份：精神的时间旅行——在头脑中沿时间和空间向前向后移动的能力。

youdao

And what happens if you want to move back and forth between a bunch of different letters?

如果你想阅读,不同的书信呢？

耶鲁公开课 - 新约课程节选

Good question, so there is this little reading head kind of like in an old phonograph player that does move back and forth and in and out depending on the implementation.

好问题，这就像,老留声机里的小读头,它通过来回移动,来完成不同的操作。

哈佛公开课 - 计算机科学课程节选

Our Whispersync technology makes it simple to move back and forth between devices.

ENGADGET: blogger-avatar

Move back and forth between opposing ideas to create energy.

FORBES: How To Deliver Great Presentations

To overcome these flaws, explains Jay Galbraith, a noted management consultant, most big companies move back and forth between a decentralised organisation along lines of business and a centralised functional structure.

ECONOMIST: Reshaping Cisco