Buna
n. 丁钠橡胶\\n[建] 布纳(橡胶), 丁(二烯)钠(聚)橡胶
🗣️ 情景例句
I have been talking to a group of salesmen
我一直在与一群推销人员谈话
He can only speculate as to which horse will win the race.
他只能推测那一匹在赛马中会获胜。
How much more?
多多少。