that they go, "okay, yeah, yeah. I'll meet you on Sunday." and they find some reason not to do it.

他们嘴上说着：“好的，我会在周日见你。”但到时候又不这么干了。

欧洲和美国的差异 - SpeakingMax英语口语达人

I think most and you are familiar with the Aufbau or the building up principle, you probably have seen it quite a bit in high school, and this is the idea that we're filling up our energy states, again, which depend on both n and l, one electron at a time starting with that lowest energy and then working our way up into higher and higher orbitals.

我认为你们大多数熟悉奥弗堡,或者构建原理，你们可能,在高中见过它，又一次,这是我们填充能级的观点，与n和l有关，一个电子每次从,最低的能级开始,然后以我们的方式上升到,更高更高的轨道。

麻省理工公开课 - 化学原理课程节选

Or, if you're meeting a friend and going out for dinner but you haven't made a reservation yet,

又或者，你准备见一个朋友，并一起出去吃饭，但是你还没有预约餐厅，

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