于事无补对事情毫无补益。[查看详情]

投石问路原指夜间潜入某处前先投以石子，看看有无反应借以探测情况。后用以比喻进行试探。[查看详情]

以卵投石用蛋打石头。比喻不自量力自取灭亡。英like an egg knocking itself against a stone; kick against the pricks;[查看详情]

画饼充饥画个饼子来解饿。本比喻徒有虚名而于实际无好处。后多用来比喻以空想来安慰自己。例虽然不曾定个来期也当画饼充饥，望梅止渴。——明冯梦龙《警世通言》英appease one's hunger with depicted cake; draw cakes to allay hunger—feed on illusions;[查看详情]

杯水车薪用一杯水去扑灭一车燃烧的柴草。比喻力量太小无济于事。例犹以一杯水，救一车薪之火也。——《孟子告子上》英a cup of water can't put out the fire on a carload of wood; try to put out a burning cartload of faggots with a cup of water—an utterly inadequa[查看详情]

板上钉钉比喻事情已经决定无可改变。例海云是已经定性已经作了板上钉钉的正式结论的阶级敌人。——王蒙《蝴蝶》英clinch a deal; finalize a decision (plan,etc); finally determined;[查看详情]