The way I see it, you have three main problems.

　　我認(rèn)為你有三個(gè)主要問(wèn)題。

　　We can reduce the problem to two main issues.

　　我們可以將這個(gè)問(wèn)題概括成兩個(gè)要點(diǎn)。

　　What is the main objective of this project?

　　這個(gè)項(xiàng)目的主要目標(biāo)是什么？

　　This is the main factor driving investment in the area.

　　這是推動(dòng)在這個(gè)地區(qū)投資的主要因素。

　　The service here is, in the main, reliable.

　　這里的服務(wù)基本上是可靠的。

　　Main Street won't be happy with this new program.

　　中產(chǎn)階級(jí)不會(huì)對(duì)這個(gè)新計(jì)劃感到高興的。