1. 无能力的;不能的
Someone who is incapable of doing something is unable to do it.
e.g. She seemed incapable of taking decisions...
她似乎无法作出决定。
e.g. He was a man incapable of violence.
他不是个会施暴的人。
2. 软弱无能的;蠢笨的
An incapable person is weak or stupid.
e.g. He lost his job for allegedly being incapable.
据说他由于软弱无能而丢掉了工作。