I think you better go first. - Why?

我认为你应该先讲-为什么？

youdao

You know, new clothes are best, and so are old acquaintances. I think, you'd better go back.

衣不如新，人不如旧，依我看来，你还是回去好些。

《新英汉大辞典》

I think I'd better let you go. I'll talk to you later.

我想我应该让你去忙了，我晚点再打给你。

youdao

But if you can get 2-1 or better, I think you can keep things simple and just go ahead and bet her.

FORBES: Betting the Breeders' Cup: Friday Races

None of us my childhood friend Marko, who lacked a pedigree but whose aristocratic pretensions had been apparent by the age of 6, my magician friend Erik nor myself knew anyone who had been to Moldova, or could pronounce its capital, Chisinau. (KISH-i-nev, kee-SHEE-now or quiche-in-know, depending who you ask.) I couldn't think of a better reason to go.

WSJ: An Accidental Trip to Trans-Dniester | Traveler's Tale