单词	unpenetrable
释义	unpenetrable adjective un·​penetrable "+ : impenetrable Word History First Known Use 15th century, in the meaning defined above
随便看	cherup cheruped cheruping cherups chervil chervils chervonets chervonetz chervontsi chervontzi Cherwell ches ches cake Chesapeake Chesapeake and Delaware Canal Chesapeake Bay Chesapeake Bay Bridge-Tunnel Chesapeake Bay retriever Chesapeake canoe Cheshire Cheshire cat Cheshire cheese cheshires Cheshvan chesils

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