Acetylidene
异乙炔
🗣️ 情景例句
All right, let's agree to differ on this topic.
好吧，我们在这个问题上保留各自的观点。
I want to reserve a seat from los angeles to tokyo.
我要预订一张从洛杉矶到东京的机票。
Come and sit down, Chen Hui.
请过来坐，陈慧。