沿着宫殿的中间线从南门口到北门口，花两小时游览世界上最大的宫殿——紫禁城。

Visit the biggest imperial palace of the world-forbidden City for 2 hours. Walk along the Central Line of palace from south entrance to north entrance.

youdao

Now, you've arrived at the concert hall and you're looking through your pocket and you realize they're gone--you've lost them.

现在，你已经到了音乐厅门口,你掏了半天兜后,你意识到票没了，你把他们弄丢了。

耶鲁公开课 - 金融市场课程节选

If unfamiliar, these are the mechanical computer devices that you have to use to buy a ticket on the T these days and there was one of these really awkward but touching situations where it was clear that this woman had no idea, you know, what to do, how to get from here to here, and I could see her just staring at the turnstiles that you're supposed to go through to get into the subway.

如果不熟悉，这是机械计算机设备,当今你必须使用它们来买地铁票,它们实在是难操作的,这个令人同情的情况是,明显这位老太太不知道怎样操作，怎样从这一步到那一步,我看见她只是凝视着,地铁的栅门口。

哈佛公开课 - 计算机科学课程节选