CONVENTION
你瞧；哎哟；真想不到
Lo and behold or lo is used to emphasize a surprising event that is about to be mentioned, or to emphasize in a humorous way that something is not surprising at all.
例句
He called the minister of the interior and, lo and behold, within about an hour, the prisoners were released...
他给内政部长打了个电话，结果你看，不到一个钟头囚犯就给释放了。
I looked and lo! every one of the fifteen men who had been standing with me had disappeared.
我一看，哎哟！原来那15个和我站一起的家伙全没了踪影。