三重过滤，有效过滤PM2.5 微尘有害物质。

The three filter, filter PM2.5 dust and harmful substances.

youdao

第一重过滤叫真实。你能百分之百确定你要讲的事情都是真的吗？

The first filter is TRUTH. Have you made absolutely sure that what you are about to tell me is true?

youdao

中层管理人员就像一个过滤器，作用十分重要。

Middle managers also act as a crucial filter.

youdao