Definition: a long period of time before something Level: C2
在遇到萨莉很久之前，我就是素食主义者了。
I was a vegetarian ___long ___before I met Sally.
在我出生很久之前，我的家族就拥有这些杯子了。
My family owned these cups ___long ___before I was born.
这项技术在其商业化之前很久就被开发出来了。
The technology was developed ___long ___before it became commercially available.
