Your reason is not good enough; I cannot accept it.

你的理由不够好，我不能接受。

This plan is not good enough; we need to reconsider.

这个方案不够好，我们需要重新考虑。

His performance was not good enough, so he was not selected.

他的表现不够好，所以没有被选中。

The taste of this dish is not good enough; it needs more salt.

这道菜的味道不够好，需要再加点盐。

The score on this exam is not good enough; I need to work harder.

这次考试的成绩不够好，我需要更加努力。

The teacher bluntly told the student that his work was not good enough.

老师直言不讳地告诉学生他的作业不够好。

The air condition was not good enough.

以前的空气状况不够好。

Me, on the other hand …OK, I'm not good enough.

另一方面，我……好吧，我不够好。

For starters, they said my credit history was not good enough.

首先，他们说我的信用记录不够好。

However, during that course I realized I was not good enough in this area.

然而，在那门课程中，我意识到我在这个领域还不够好。