Polyisoprenes
(polyisoprene 的复数) n.[化]聚异戊二烯
🗣️ 情景例句
for his ten o'clock appointment with you.
等着十点钟与你的晤谈。
OFF. It gets dark.
断开开关，它就会熄灭。
Though we all got out to examine the fissure, he remained in the car.
我们纷纷下车察看那个大裂缝，他却呆在车上。