单词	undercourse
释义	undercourse noun : a layer (as of flooring) immediately under a course of tiles : a course (as of shingles) laid beneath a covering course Word History Etymology under entry 3 + course
随便看	doddled doddles doddling doddy doddy mitten doddypoll dodec- dodeca- dodecagon dodecagons dodecahedra dodecahedral dodecahedral cleavage dodecahedron dodecahedrons dodecahydrate dodecamerous dodecane Dodecanese dodecanesian dodecanesians dodecant dodecaphonic dodecaphonically dodecaphonies

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