Estergum
松酯胶, 酯树胶
🗣️ 情景例句
Well ...? Could we ask for anything more?
嗯…… 我们还有什么可求的吗？
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
We need them urgently.
我们急需这些资料。