any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
resins的用法和样例:
例句
Acrylics may also be modified with other resins. 丙烯酸也可以被其它树脂改性。
The resins were used to turn out millions of helmet liners. 用这类树脂生产了成百万只钢盔内衬。