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
What's the bottom line?
究竟是怎么回事？
My son wants to be a policeman when he grows up.
当他长大时，我的儿子想要成为一个警察。
The article began: 'Hundreds of steps lead to the high wall which surrounds the president's palace'.
“几百级台阶通向环绕总统的高墙。