B1 to not be able to do something不能做,无法做
More examples
We were unable to get funding and therefore had to abandon the project.
She's been unable to play since January because of a torn calf muscle.
It's a tragedy that so many young people are unable to find jobs.
We regret that at the present time we are unable to supply the goods you ordered.
Experts seem unable to agree whether the drug is safe or not.
adjective
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