Their efforts to revive him were futile.
他们对他
效。
效的, 用的, 意
的词
词
想词益的;意的;用;生产的,使达不到预期目
的;用的;意的;效的;Their efforts to revive him were futile.
他们对他效。
He is a futile sort of person.
他是一个没有用的人。
They were killed, to the last man, in a futile attack.
因为进攻失败, 他们全部被杀, 一幸免。
Without microscopes and other modern equipment, attempts to teach science were futile.
没有显微镜及其他现代化的设备, 想教授自然科学是不会有成果的。
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