impotent

adj.

无力的；虚弱的；无效的；[医]阳痿的

1. The operation left him impotent.
   手术让他变得性无能。
2. The boy is so impotent that he can't do a simple job well.
   这个男孩非常无能，连一件简单的工作也做不好。
3. Without the chairman's support, the committee is impotent.
   没有主席的支持，委员会是无能为力的。

Bacillus thuringiensis: an impotent pathogen?
Ultrastructural changes in impotent penile tissue: a comparison of 65 patients.
Apomorphine-induced penile tumescence in impotent patients--preliminary findings
Decreased Bioavailable Testosterone in Aging Normal and Impotent Men*
Computerized analysis of smooth muscle fibers in potent and impotent patients.
Re: Computerized analysis of smooth muscle fibers in potent and impotent patients.
Do impotent men with diabetes have more severe erectile dysfunction and worse quality of life than the general population of impoten...
Is impotence an arterial disorder? A study of arterial risk factors in 440 impotent men.
Assessment of sexual function in depressed, impotent, and healthy men: factor analysis of a Brief Sexual Function Questionnaire for ...
Effect of raising endogenous testosterone levels in impotent men with secondary hypogonadism: double blind placebo-controlled trial ...