密不透风

mì bù tòu fēng

释义

1. sealed off
2. impenetrable

密不透风 的构成词

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