resin

The amber necklace was actually formed millions of years ago from fossilized tree resin.

(Chinese) 这条琥珀项链实际上是数百万年前由石化的树脂形成的。

Varnish is made by dissolving natural or synthetic resin in a solvent to coat wood.

(Chinese) 清漆是将天然或合成树脂溶解在溶剂中制成的，用于涂抹木材。