The cold hard scientific evidence to back it up.

严酷的科学证据支撑着它。

I need it for my sanity, and I need you to back me up.

我需要工作让我头脑清楚，你得支持我。

Hope you're back Up Top soon! ’

“希望你也能很快回到上面去！”

And this is actually backed up by science.

这其实是有科学依据的。

Walking back up can take up to four hours.

向上走可能需要长达四个小时。

Musicians are said to have better language skills. And scientific studies have backed that up.

音乐家被认为拥有更好的语言技能。科学研究也证实了这种观点。

So it can always tax more people to back up its loans.

而政府总能收更多的税来支持它的贷款。

His mother tottered away, back up the ward, humming to herself.

他母亲蹒跚地走了回去，一边哼着歌曲。

Most of the public transportation lines are back up and running.

大部分通线路已经恢复运营。

Sometimes you have to break them down to build them back up.

有时想要重塑一个人，就得先把他彻底击垮。

Back up your hard drive. Now.

现在就备份你的硬盘。

These projections are backed up by scientific facts concluded by all nations through the IPCC.

这些预测得到了所有家通过联合政府间气候变化专门委员会（IPCC）得出的科学事实的支持。

Is everybody back up in the building?

是否所有人都在楼里舞动？

Intersections outside of a highway will back up onto it.

高速路外的叉口还是会堵到高速路。

But the studies unfortunately doesn't back it up.

但是可惜，并没有研究支撑他们的说法。

And that airfield was back up and running the following day.

那个机场在第二天又恢复运行了。

Whoah whoah, back up there, Sparky. What did you mean by that?

等等，退回到刚才那句话，这位活泼的先生，你是什么意思？

Our daily current events coverage picks back up on Monday.

我们的每日新闻精选将会在周一与您再次见面。

But backing up the argument from the original position is the second argument.

但是从原始状态支持这个原则的是第二个论点。

Once the sun rises, the grass eventually warms back up.

太阳升起后，草地的温度上升。