I passed the test by the skin of my teeth.

我差点儿没通过考试。

youdao

I made an awful mess of my maths paper. If I pass, it will only be by the skin of my teeth.

我的数学考卷做得糟透了，如果通过，我也只是刚刚及格。

youdao

I got through the crisis "by the skin of my teeth," only to find myself still under the control of that strange god.

我“千钧一发”侥幸逃过危机，却发现自己仍然在异类神祇的股掌之中。

youdao