我很犹豫，因为我对中医知之甚少，并且从未尝试过。

I was hesitant because I knew so little about it and have never tried it before.

youdao

如今各大学正在清空校园，从未尝试过如此大规模的在线学习。

Universities, now emptying their campuses, have never tried online learning on this scale.

youdao

但是如果他们从未尝试又怎么知道呢？

But how can they possibly know when they never try?

youdao

This really hadn't been attempted.

这之前从未有人尝试过。

耶鲁公开课 - 新约课程节选