单词	hardpan
释义	hardpan noun hard·​pan ˈhärd-ˌpan  1 : a cemented or compacted and often clayey layer in soil that is impenetrable by roots 2 : a fundamental part : bedrock Example Sentences Recent Examples on the Web This hardpan is called caleche, and is equivalent to a 2-inch thick layer of concrete. Margaret Lauterbach, idahostatesman, 31 Jan. 2018 But the wind was gusting to 30 mph, and the sun baked out greens that became like Texas hardpan. Doug Ferguson, Orange County Register, 23 Mar. 2017 Root constriction caused by hardpan or compacted soil, sunburn, borer insects, soil nematodes, root rot, powdery mildew and spider mites might also be affecting the tree. Debbie Arrington, sacbee.com, 25 May 2017 Word History First Known Use 1803, in the meaning defined at sense 1
随便看	longways longways dance longwayser longwayses longwaysest longwindednesses longwise longwiser longwisest longwood Longyearbyen longyi longyis Lonicera lonicerae loniceras lonitens Lonk lonks Lonsdale lontar lontar palm lontares lontars loo

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