Alkylide
烃基化物
🗣️ 情景例句
Oh, thank you! Thank you!
哦， 谢谢， 谢谢 。
It's destiny.
真是有缘。
Hardly anyone can positively enjoy sitting in a train for more than a few hours.
很少有人能够真正喜欢坐几个小时以上的火车。