VERB 大量地涂抹;厚厚地涂抹 If you slather something with a substance, or slather a substance onto something, you put the substance on in a thick layer. 大量地涂抹;厚厚地涂抹 [Also VERB n preposition]
If your skin is dry, you have to slather on moisturiser to soften it. [VERB noun with adv.]
如果你皮肤比较干燥,就得多涂些滋润保湿滋润
...pieces of toast slathered with butter and marmalade. [beVERB-ed prep.]