Polybutadienes
(polybutadiene 的复数) [机] 聚丁二烯
🗣️ 情景例句
Do you want manual or automatic transmission?
你的汽车想配备一个手动挡还是自动挡？
It's hard sailing when there is no wind.
没有风难航行。
Time is money.
时间就是金钱。