So why is ethanol suddenly back in fashion?

那么乙醇突然又风靡起来的原因是什么呢？

youdao

Eight years ago another species came suddenly back from the dead.

八年前，另外一个物种还不会死。

youdao

She opened the door to go out, and then suddenly thought of something and turned back rather slowly.

她打开门要出去，然后突然想起了什么，很慢地转回来。

youdao

These include hearing a roaring or sucking noise, seeing the ocean suddenly pull back or rise, or feeling a strong earthquake that lasts more than twenty seconds.

VOA: special.2011.06.07

But then suddenly they get yanked back, and they wake up, you know, in the hospital room.

但是突然他们被猛拽回来,然后他们在病房里,醒了过来

耶鲁公开课 - 死亡课程节选

There's always a risk that investors will suddenly want their money back.

风险无时不在,投资者会突然要求撤回资金

耶鲁公开课 - 金融市场课程节选

With 25 minutes to go England were suddenly back in contention but Australia exploded into life once more as the mercurial Cooper combined with Digby Ioane for the former to score a dazzling second try.

BBC: Australia 27-17 England

It appeared they had only just finished the 18th and were suddenly straight back onto the first.

BBC: Plenty to smile about

At the time, the climato-sceptics suddenly came back at the center of the mediatic arena, with an audience.

FORBES: Local Warming