在线词典立竿见影在阳光下把竿子竖起来,立刻就看到影子。比喻立刻见到功效。拼音lì gān jiàn yǐng解释在阳光下把竿子竖起来,立刻就看到影子。比喻立刻见到功效。近义词马到成功、立见成效反义词旷日持久、劳而无功英文释义(lit.) set up a pole and immediately see its shadow (idiom); (fig.) to get instant results