captable是错误写法，正确写法是capable

adj.有能力;有才能;能力强的;足以胜任的

派生词： capably adv.

例句：

I'm perfectly capable of doing it myself, thank you.

谢谢，我完全有能力自己做。

His reasoning is based on the premise that all people are equally capable of good and evil.

他的推理是以人可以为善亦可以为恶为前提的。

Are you inferring I'm not capable of doing the job?

你的言外之意是不是我不能胜任这份工作？