单词	hardpan
释义	hard·pan (härdpăn′) n. 1. A layer of hard subsoil or clay. Also called caliche. 2. Hard, unbroken ground. 3. A foundation; bedrock.
随便看	Tm Tm TM TM t.m. T-maze tmesis TMJ TN TN tn. TNF TNO Tnpk. TNT to TO toad toadeater to a degree toadfish toadflax toadstone toadstool to advantage

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