mainly

1. ADV You use mainly when mentioning the main reason or thing involved in something. 主要地

The stock market scandal is refusing to go away, mainly because there's still no consensus over how it should be dealt with. 此次股市丑闻历久不散，主要是因为在此事如何处理上尚无共识。

2. ADV You use mainly when you are referring to a group and stating something that is true of most of it. 大部分地[ADV with group]

The African half of the audience was mainly from Senegal or Mali. 观众中的一半非洲人主要来自塞内加尔或马里。