Primer
01
底漆, 底涂
an undercoat applied before painting that prepares and protects the surface
02
入门书, 初级读本
an introductory book that provides basic knowledge on a subject
03
妆前乳, 化妆底霜
a cosmetic product used to create a smooth base for makeup
04
引信, 点火器
any igniter that is used to initiate the burning of a propellant



























