Their efforts to revive him were futile.
他们对他抢救
效。
效
, 用, 意义, 益;意义;;用;,使达
期目
;
;用;成功;意义;效;,明智;Their efforts to revive him were futile.
他们对他抢救效。
He is a futile sort of person.
他是一个没有用
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设备, 想教授自然科学是
会有成果。
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