✔ 最佳答案
一言不合
Come to no compromise
As the partners can come to no compromise, they decide to wind up the business.
一去不回
Gone forever / Forever gone
He is gone forever.
Time is forever gone.
一聲不響
Without a word
He left without a word.
一絲不苟
Attend to every detail
He attends to every detail when working on the project.
一文不值
Worthless / worth nothing
The painting is so badly done that it is worth nothing.