拼音：wú suǒ bù bèi，zé wú suǒ bù guǎ
注音：ㄨˊㄙㄨㄛˇㄅㄨˋㄨˊㄙㄨㄛˇㄅㄨˋㄍㄨㄚˇ
解释：寡：少，薄弱。没有不防备的地方，就没有不薄弱的地方。原指应重点设防，不宜分散兵力。后指不能面面俱到，要保证重点。
出处：《孙子·虚实篇》：“故备前则后寡，备后则前寡；备左则右寡，备右则左寡；无所不备，则无所不寡。”
Few: few, weak. Where there is no unprepared place, there is no weak place. It originally meant that we should focus on fortification and should not disperse our troops. The back finger can't cover everything. We should ensure the key points.
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