这一方法不恰当，也不充分。

The method is ___inadequate, not sufficient.

房间里的暖气不足，冬天会非常冷。

The heating in the room is ___inadequate, making it very cold in winter.

由于缺乏经验，他认为自己无法胜任这份工作。

He felt ___inadequate for the job due to lack of experience.