口语，“不如人意”用英语怎么说？

can't cut it

(also can't cut the mustard)

to not be able to deal with problems or difficulties in a satisfactory way; to not successfully complete or accomplish a desired or expected result.

干不了;不符合条件;不如人意

If he can't cut it, then we'll get someone else to do the job.

要是他干不了这活儿，那我们就另请高明。

I have to warn you, your last few reports haven't quite cut it. You're going to need to improve if you want to keep your job here.

我得警告你，你最近的几份报告都不如人意。如果你想在这里保住你的工作，你就需要改进。