It happened—whether by accident or design —that the two of them were left alone after all the others had gone.

碰巧—不知是偶然还是有意安排—其他人走后，只剩下了他们两个人。

《牛津词典》

He feared for his mother, left alone on the farm.

他为独自一人留在农场的母亲担忧。

《牛津词典》

The thought of being left alone filled her with horror.

想到被孤零零地留下，她就不寒而栗。

《牛津词典》

She was in no condition to be left alone while he went to find help.

VOA: special.2009.10.31

So this is a little bit trickier to look at and see what it means, but essentially we have two hybrid orbitals, which are shown in blue here, and then we have one p orbital that's left alone that's going up and down on the page.

看这个图肯能会觉得比较诡异，但本质上，骂我们有两个杂化轨道，这里用蓝色表示，还有剩下一个p轨道,在图中上下方向上。

麻省理工公开课 - 化学原理课程节选

There are nine keys for my left thumb alone so I'm kind of switching between these on the back here and many others, and because of that I can go very high and I'll just demonstrate that.

我的左手拇指就要控制九个音键,通过按动后部,和其他地方的音键,我就能吹出很高的音,我现在就来演示

耶鲁公开课 - 聆听音乐课程节选

Left alone, over-regulation will only get worse, with the cost paid in slower economic growth.

FORBES: Reviving America's Economy: 3 Issues We Need To Address Now

Thereupon, he was left alone with his guitar to walk off into the sunset.

FORBES: It's a Long Way from Wrong to Right

In one episode, an embittered version of Amy is left alone for thirty-six more years.

NEWYORKER: Fantastic Voyage