It can be very hard to think rationally when you're feeling so vulnerable and alone.

在你感到如此脆弱和孤单的时候很难理性地思考问题。

《柯林斯英汉双解大词典》

You don't have to be alone with him and I don't think you ought to be.

你没必要和他单独相处，而且我认为你不应该和他单独相处。

《柯林斯英汉双解大词典》

They stand alone and can be used alone.

他们是独立的，可单独使用。

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Investigators sometimes use chemicals and special lighting to uncover fingerprints that cannot be seen with the eye alone.

VOA: special.2010.05.05

And although Jacob appears to be something of an anti-hero He actually literally limps into the Promised Land alone Jacob is a new and honest man.

尽管雅各布貌似是一个反英雄式人物,他实际上确实是独自艰难地进入应许之地的,雅各布是一个全新的诚实的人。

耶鲁公开课 - 旧约导论课程节选

So he begins here: Rookslive in a crowd and are mainly vegetarian; Crow may be either another name for rook, especially when seen alone, or it may mean the solitary Carrion crow.

所以他开头这样写道：,白嘴鸦过着群居的生活，它们大部分是素食者;,单独看的时候，乌鸦也能做白嘴鸦的别名，或者乌鸦就是指独居的吃腐肉的乌鸦。

耶鲁公开课 - 文学理论导论课程节选

But front-line staff need the authority to do their job and be left alone to do their job.

FORBES: I Experience, Therefore I Shop

"It's a political reality that around half a million irregular migrants can't readily be deported and EU migration alone cannot be relied on to fill the jobs many of them are doing, " he said.

BBC: NEWS | UK | UK Politics | Immigration amnesty is ruled out

Geoffrey Podger, the chief executive of the government's Health and Safety Executive, reckons most trees should be left alone and experts called in to assess obviously rickety ones only in very public places.

ECONOMIST: Red tape: The wood for the trees | The