涂抹的颜色看起来绚丽多彩，就像蛋糕上厚厚的糖霜。

The smeared colours looked glorious, like rich, thick frosting on a cake.

youdao

我不记得那天晚上跟他说了什么，但确实记得看着他在吐司上涂抹黄油，而且每一口都吃得津津有味！

I didn't remember what I told him that night, but I did remember watching him smear butter on that toast and eat every bite!

youdao

不要在眼睛上涂抹药膏或者药物。

Don't apply ointment or medication to the eye.

youdao

You've probably seen agar plates, if you smear a solution that's contaminated with bacteria on it, then that bacteria will grow on this agar rich medium and you'll get many, many copies of the bacteria that you've smeared at low density onto the plate.

你们大概见过琼脂培养基,如果将有细菌的溶液涂抹在培养基上,细菌就会在富含琼脂的培养基上生长,你会得到许多许多细菌,即使你只涂抹了低浓度溶液

耶鲁公开课 - 生物医学工程探索课程节选