无力的英文：
powerless
lacking strength

参考例句：

Lacking strength or energy; spiritless; weak.
无力的无力或无精力;无精打彩的;虚弱

To incapacitate physically.
使病弱使体质上无力

A Banner hanging slack.
无力挂着的旗帜

Deprived of virility,strength,or vigor.
无男子气的、无力的或无生机的

Lacking energy or vitality.
无力的缺乏能量和活力。

The state of being weak or feeble;infirmity.
衰弱虚弱或无力的状态;体弱

Despite his weariness, Brand mustered a wan smile.
虽然精疲力竭，布兰德还是无力地笑了笑。

A weak barrier,defence,team
不结实的挡板、无力的防御、弱队

He trembled, unnerved and impotent
他哆嗦着，丧失了勇气，浑身无力。

She was unable to get to grips with her assailant.
她无力与袭击她的人扭打.

powerless是什么意思：
a. 无力的,无权的,无效能的

I am powerless to intervene in the matter.
我对调停此事无能为力。

See how powerless is the human will against predestination!
请看人类反抗命运的意志是多么脆弱无力啊！

The authorities seem powerless to stem the rising tide of violence.
当局似乎无力阻止愈演愈烈的暴力活动。

lacking是什么意思：
adj. 缺少的
v. lack的现在分词；缺少

They lacked for nothing.
他们什么都不缺少。

lacking in impressiveness.
缺少令人难忘的特点。

People do not lack strength; they lack will
人们不缺力量,缺的是决心

strength是什么意思：
n. 力量；长处；勇气；强度

Union is strength
团结就是力量

Union is strength.
团结就是力量。

Maximum crushing strength (=crushing strength at maximum load)
抗压极限强度