这类营养素对维持身体正常功能也必不可少，但相比之下需要量少得多。

A micronutrient is any nutrient that our bodies also need to function properly, but in much smaller quantities.

youdao

这类营养素对维持身体正常功能也必不可少，但相比之下需要量少得多。

A micronutrient is any nutrient that our bodies also need to function properly, but in much smaller quantities.

youdao