EXCLAM
（書面語中用于表示在交談時(shí)作出回應(yīng)或引起他人注意或表示驚訝、失望）啊
Ah is used in writing to represent a noise that people make in conversation, for example to acknowledge or draw attention to something, or to express surprise or disappointment.
例句
I'm meeting Anna Langenbach. Ah, this seems to be the train now...
我要去見安娜·朗根巴赫。啊，這像是我要乘坐的火車了。
Ah, so many questions, so little time.
啊，這么多問題，這么短的時(shí)間。