Access was gained to these shops through the small alleyway at the back of the properties—it's dark and as you can imagine, no one saw the thief or thieves in action.

通过房子后面的小巷子可以进入这些商店，那里很黑，你可以想象不会有人看到小偷的行动。

youdao

But a passenger at the back of the bus saw him.

但是在公交车后面的一位乘客看到了他。

youdao

As they carried him back, he asked them to stop every time he saw an American soldier in one of the muddy trenches.

当他们把他抬回去时，每次看到躺在泥泞的战壕里阵亡的美国兵，他都要求他们停下来，看上一眼。

youdao

And, in fact there's a technique of analysis used today that's called Rutherford back scattering where people actually saw that this is a means of identifying the substance, the sample.

事实上这是现在用的一种分析技术,称作卢瑟福背散射,就是人们实际上看到的那样,这是鉴别物质样品的一种方法。

麻省理工公开课 - 固态化学导论课程节选

They spotted Mr. Graham down a hallway near the back of the apartment and saw the teen duck into the bathroom.

WSJ: Officer Charged in Teen's Shooting

The homeowner went round to the back of house, saw the man in the porch and shut him in there.

BBC: Kent Police 'correct to release Bearsted intruder'

Alexander told WABC she was sitting in the back of the bus when she saw those toward the front starting to panic.

CNN: Greyhound bus ride turned into roach-fest, passengers say