As years went by, they thought George would never be back till they got the call from an animal shelter.

几年过去了，在他们接到动物收容所的电话前，都以为乔治不会回来了。

youdao

As there is no gravity, you can't stand and any slight push can result in tragedy you can be pushed into space, never be back.

因为没有重力，你无法站立，任何轻微的推力都可能导致悲剧，你可能被推到太空中，再也不会回来。

youdao

Once you leave this place, you can never be back again.

一旦你离开这个地方，就再也回不来了。答案。

youdao

one of the soldiers said to Smith. "You'll never be able to walk all those miles with that heavy pack on your back."

VOA: special.2009.12.12

(He recalls his emotion as he stepped back onto U.S.soil."It felt great." as his voice quivers.) "I thought I'd never be able to come back."

VOA: standard.2010.06.22

"My baby will never be back again, " West said, sobbing.

NPR: Ga. Woman Says She's Certain Suspect Shot Her Baby

It was around then that Tazhayakov says that Kadyrbayev showed them a text message from Tsarnaev that they could take whatever they needed from his room -- which Tazhayakov interpreted as meaning he'd never be back.

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And therefore, none of the emergency measures could never be ratcheted back as well.

NPR: Week In News: Obama's Foreign Policy Pitch