Definition
这是一个成语，字面意思是“立起竹竿就能看到人影”，比喻某种方法、措施或行动能在极短的时间内产生明显的效果。强调效果迅速、立竿见影，通常用于描述解决方案、治疗或策略的即时成效。使用时常带有积极色彩，但也可以中性描述。
f.e.
to produce instant resultsto be effective right away
Examples
- 立竿见影，。Xīn yào de liáoxiào zhēn shì lì gān jiàn, bìngrén fúyòng hòu lìkè hǎozhuǎn.The new medicine is really effective — the patient improved immediately after taking it.
- 立竿见影，。Zhège yíngxiāo cèlüè lì gān jiàn, xiāoshòu'é yì zhōu nèi fān le yí bèi.This marketing strategy produced instant results — sales doubled within a week.
- 立竿见影，。Tā tíchū de gǎigé fāng'àn bìng fēi lì gān jiàn, xūyào chángqī tuīxíng cáinéng jiànxiào.The reform plan he proposed does not yield instant results; it requires long-term implementation to take effect.
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