lo

看哪、瞧舊式

And lo, the whole crowd fell silent as she stepped forward.

看哪，她一走上前，全場群眾便安靜下來。

沒想到、你瞧口語

I opened the box and, lo and behold, the missing keys were inside.

我打開盒子，沒想到不見的鑰匙就在裡面。