Dienes
[化] 双烯; 二烯烃
🗣️ 情景例句
Come on, Sam ...
好啦， Sam……
Do you have some change?
你有零钱吗？
By this time, however, three men had come into the ring and they quickly dragged the drunk to safety.
好像连牛也在为他感到遗憾，