我喜欢用不锈钢泡茶器来泡茶，因为它不会影响茶的味道。

I prefer using stainless steel ___infusers for my tea because they don't affect the flavor.

这些新型空气净化器为办公环境注入了清新空气。

These new air purifiers serve as ___infusers of clean air into the office environment.