无隙可乘，汉语成语，拼音是wú xì kě chéng，形容没有空子可钻。出自《宋书·律历志下》。
朋友之间感情真诚，敌人就会无隙可乘。
The feelings between friends is sincere, the enemy will WuXiKeCheng.
有时退到该地区还无隙可乘，便不得不再退几步，待敌发生可乘之“隙”。
Sometimes when we have retreated to the predetermined area and not yet found openings to exploit, we have to retreat farther and wait for the enemy to give us an opening.
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