n. 
层;凹地
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athermic, athermobiosis, athermosystaltic, atherocheuma, atherogenesis, atherogenic, atheroma, atheromasia, atheromatosis, atheromatous,
相似单词
mulch, mulcher, mulching, mulching-machine, mulct, mulde, muldex, mule, muledeer, mule-foot,