not qualified
英 美
This man was not qualified to drive and was speeding.
这个男子没有资格开车, 而且还在超速驾驶。
Nursing auxiliaries provide basic care, but are not qualified nurses.
助理护士们提供基本护理,但没有护士资格。
The boss is like implying that this is best that can be said about Mr. X that he is really not qualified.
他这样做的目的是想要说 X 先生根本不能胜任任何工作。