unable meaning in English
adj.
不能，不会；〔罕、诗〕弱，无力的。 I am unable to walk. 我不能走路。
Examples
- I am unable to keep my engagement with you .
我不能和你们朝夕相处。 - His aunt was now unable to leave her bed .
他老姑太太现在不能下床了。 - I regret to say that i am unable to help you .
我很抱歉不能帮助你。 - The child was unable to restrain her tears .
那孩子不能制止住她的眼泪。 - You are unable to render me the least assistance .
你一点都不能帮我的忙。