incapability of doing sth 做某事的无能
legal incapability 法律上的无行为能力
physical incapability 身体上的无力
mental incapability 精神上的无能力
declare incapability 宣告无行为能力
1. The lawyer argued that the client's mental incapability prevented him from understanding the contract.
律师辩称，客户的精神无行为能力使他无法理解这份合同。
2. Due to his physical incapability, the athlete had to retire from professional sports.
由于身体机能下降（无力继续），这名运动员不得不从职业体育界退役。
3. The company cited the director's incapability as the reason for his sudden dismissal.
公司称董事长的无能是其被突然解雇的原因。
4. There is a growing concern about the incapability of current systems to handle big data.
人们越来越担心现有系统处理大数据时的无力感。
A: Why was the will considered invalid by the court?
A：为什么法院认为这份遗嘱无效？
B: Because the testator was suffering from a severe illness that caused mental incapability at the time.
B：因为立遗嘱人在当时患有重病，导致了精神上的无行为能力。
1) 无能；无力；缺乏能力
2) 法律上的无行为能力（指因年龄、精神状况等无法行使法律权利）
3) 生理或心理上的功能缺失
1. 无能；无力；缺乏做某事的能力或资格
e.g.
His incapability to drive made him rely on public transport.
他无法驾驶的缺陷使他要依赖公共交通。
noun
1. The state of not being able to do something; lack of ability or power to do or achieve something.
Synonym: inability, incompetence, impotence