not producing an intended effect; "an ineffective teacher"; "ineffective legislation" 同义词：ineffective, uneffective,
lacking in power or forcefulness; "an ineffectual ruler"; "like an unable phoenix in hot ashes" 同义词：ineffective, unable,
producing no result or effect; "a futile effort"; "the therapy was ineffectual"; "an otiose undertaking"; "an unavailing attempt" 同义词：futile, otiose, unavailing,
例句与用法
1.
All rescue measures proved ineffectual . 抢救无效。
2.
The sun sank down, and in the sky floated a thin, ineffectual moon . 夕阳已经西斜，天空升起一轮淡淡的明月。
3.
She had felt at the same time that he was helpless and ineffectual . 同时她也看到了他的孤弱无能，无所作为。
4.
The years of ineffectual service count big in the bestowal of rewards . 几年徒劳无益的服务，在论功行赏时就大有关系。
5.
The principal finding aid they offer users--the card catalogue--is largely ineffectual . 他们提供给读者的主要查找途径--卡片目录--大部分已经失效。
6.
The middle class is weak and ineffectual and tends to become dependent on and subservient to the ruling class . 中产阶级软弱无能，趋向依赖和屈服于统治阶级。
7.
After their two or three ineffectual attempts, tom reeled, and fell heavily to the ground . 他们徒劳无益地试了两三次之后，只见汤姆摇晃了两下，又扑通一声摔倒在地。
8.
They nominated judge alton parker of new york, an obscure and ineffectual third-rate politician . 他们提名纽约的奥尔顿帕克法官为候选人。他是一位既无名望又无能耐的三流政客。
9.
I do seem to be a broken-down monarch of some kind, like my old man, the princely immigrant and ineffectual bootlegger . 我倒有点儿象个落魄的王孙，象我家的老头子，一个气派十足的移民，一个经营无方的私酒商。
10.
Mrs . bennet s schemes for this day were ineffectual 班纳特太太这一天的打算没有如愿。
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