“打底”怎么读

“打底”的英语可以翻译为：[纺]bottoming，[工]priming，render，rendering ...

我说,先投一万打底.I mean to put in ten thousand. Ground floor.使用化妆品之前先用点润肤脂打底.Put some moisturizer on as a base before applying your make - up.牛奶般完美肌肤全靠真正的牛奶打底.Perfect skin like milk depend on the real milk backing....