Bidesyl
联二苯乙酮基
🗣️ 情景例句
No, it's Ok.
不用， 没有关系 。
He emerged as leader at the age of thirty.
他在30岁时出人头地成为领袖。
A team of pot-holers recently went down the Gouffre Berger.
最近，一队洞穴探险者下到了高弗。伯杰洞里。