Dnf
abbr. 未完成（did not finish）
🗣️ 情景例句
but I knew engineering was not for me.
但我知道工程对我不合适。
A good book is a best friend who never turns his back upon us.
一本好书，莫逆之交。
I once spend an uncomfortable weekend which I shall never forget at his house.
有一次，我在他家里度周末，过得很不愉快。这事我永远不会忘记。