Therefore, the excuse is that you didn't study hard enough or work hard enough to understand what was expected of you so that you could perform higher.

因此，你的理由应该是自己学习不够努力，或者没有努力去了解学校对自己的期待，结果导致成绩不佳。

youdao

Therefore, we should never make such an excuse as "a little dishonesty is only a trifle thing".

因此，我们不应该找这样的借口：“不诚实只是一件小事。”

youdao

He pleaded headache, therefore, as an excuse to stay at home.

所以他以头痛为借口呆在家里。

youdao

And, therefore, there is no excuse for not achieving all the progress we can.

FORBES: Connect

His excuse was always that parties would be tribal, and therefore dangerously divisive.

ECONOMIST: Uganda