密不透风

mì bù tòu fēng

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Definitions

1. sealed off
2. impenetrable

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Child Words of 密不透风

• 不 不 bù: no; not so
• 密 密 mì: secret
• 透 透 tòu: (bound form) to penetrate; to seep through
• 风 风 fēng: wind
• 透风 透风 tòu fēng: to let air pass through; to ventilate