ineffectual

柯林斯詞典

1. ADJ If someone or something is ineffectual, they fail to do what they are expected to do or are trying to do. 無(wú)能的; 無(wú)傚的
The mayor had become ineffectual in the struggle to clamp down on drugs. 該市長(zhǎng)在打擊毒品的鬭爭(zhēng)中行動(dòng)不力。
2. ineffectuallyADV 無(wú)傚地
Her voice trailed off ineffectually. 她的聲音漸漸微弱得聽(tīng)不見(jiàn)了。