现在你需要一个瓶子用来盛放颜色浅的在甘油上层的生物柴油。

You should now have a bottle containing lighter colored biodiesel on top of a layer of darker glycerine.

youdao

体积大的物体要比体积小的物体重，颜色深的物体要比颜色浅的物体重。

Large objects generally weigh more than small objects and dark objects weigh more than light colored objects.

youdao

沙发的颜色再浅一点就不那么扎眼了。

The sofa would be less obtrusive in a paler colour.

《牛津词典》