One of the main difference is is that when you're talking about multi-electron orbitals, they're actually smaller than the corresponding orbital for the hydrogen atom.

其中最主要的区别之一,是当你讨论多电子轨道时,它们实际上，要比对应的氢原子轨道,要小一些。

麻省理工公开课 - 化学原理课程节选

I think the main difference is Australians tend to mumble a little bit and to draw out their vowels,

我想，主要的区别是澳大利亚人习惯说话有点含糊，而且突出元音发音，

有趣的澳大利亚英语 - SpeakingMax英语口语达人

And the major difference seems to be in how they classify their attorneys, their lawyers

主要的区别似乎是他们怎样对律师进行分类，

美国式对比英国式 - SpeakingMax英语口语达人

What do you think is the main difference between Germany and the U.S.?

你觉得德国和美国主要的区别是什么？

一见钟情的学校 - SpeakingMax英语口语达人

I'd say the major difference is probably the workload.

让我说主要的区别在于工作量。

做交换生来到这里 - SpeakingMax英语口语达人

Yeah, they are the main differences, I think.

是的，我想这些就是主要的区别了。

有趣的澳大利亚英语 - SpeakingMax英语口语达人

I think that's the main difference.

我觉得这是主要的区别。

关于巴西 - SpeakingMax英语口语达人

Yeah, that's for me the main difference. I see that.

是，对我来说这是主要的区别。我能看出来。

一见钟情的学校 - SpeakingMax英语口语达人