ah
exclamation (also aah) uk/ɑː/ us/ɑː/
（表示理解、愉快、痛苦、惊奇或注意到某事物）啊
used to express understanding, pleasure, pain, surprise, or the fact that you have noticed something
Ah, I see. 啊，我明白了。
Why has the train stopped? Ah, now we're off again. 火车怎么停了？啊，现在又开了。
Ah, Jessica, how wonderful to see you! 啊，杰茜卡，见到你真是太好了！
Ah, what a lovely baby! 啊，多可爱的宝宝啊！