Ethynation
乙炔化
🗣️ 情景例句
Thanks a million.
非常感谢。
We are very proud and honored to have a distinguished group of guests such as you to our company.
我们为能请到您这肃尊贵的客人而深感骄傲和荣幸。
and its owner his or her full intelligence;
和智力还有待发展和完善，