英语语法分析

Brevity is the first thing we can learn from them.

简洁是我们可以从他们身上学到的第一件事。

Last but not the least, a speaker has to keep in mind the value of brevity.

最后但并非最不重要的是，演讲者必须牢记简洁的价值。

That emphasis on brevity applies even more when you are delivering a speech.

在演讲时，强调简洁更适用。