我想我们很久以前见过一次。

I think we met once, ___long ___ago.

我上次见到他是不久前。

It was not ___long ___ago that I last saw him.

不久以前，你可以在晚上6点按任何你选择的荷兰门铃，你会发现全家人都围在厨房桌子旁吃晚饭。

Not so ___long ___ago, you could ring each Dutch doorbell of your choice at 6 pm and you'd find the whole family gathered around the kitchen table, having their supper.