Caoutch(ouc)ene
[化] 生胶干馏渣(生胶干馏所得的高沸点产物)
🗣️ 情景例句
I've been wrestling
我一直左思右想
Knowledge advances by steps and not by leaps.
知识只能循序渐进，不能跃进。
No.Later, in a few weeks' time I'll put the little plants in the earth.
不止。几星期以后，我要把菜秧移到地里。