unable
01
无法, 不能
being incapable of or lacking the skill, means, etc. necessary for doing something
例子
They were unable to fix the problem without additional resources.
没有额外资源，他们无法解决问题。
02
无法
(usually followed by `to') lacking necessary physical or mental ability
03
不能的, 无力的
lacking in power or forcefulness
