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

He felt Spain should be left alone to honor its promises to the Cuban people.

VOA: special.2010.07.08

Slavery could be left alone in the South until it slowly died.

VOA: special.2009.06.11

President McKinley felt Spain should be left alone to honor its promises.

VOA: special.2010.07.15

A continually monitored person is not left alone to suffer.

VOA: special.2010.05.04

They said they only wanted to be left alone.

VOA: special.2009.10.22

They just wanted to be left alone.

VOA: special.2009.11.05

If left alone,what they do is will put native medicines or some unwanted medicines and spoil their eyes.

VOA: standard.2010.05.25

He later left the group to perform alone.

VOA: special.2009.07.10