mulch

n. 护盖物,护根,根篱 vt. 铺护盖物,做护根

muddy, mudguard, muesli, muezzin, muff, muffin, muffle, muffled, muffler, mufti, mug, mugful, mugger, mugginess, mugging, muggins, muggy, Muhammad, mulatto, mulberry, mule, muleteer, mulish, mulishly, mulishness, mull, mullah, mullet, mulligatawny, mullion, mullioned, multi-, multifaceted, multifarious, multifunction, multilateral, multilingual, multimedia, multinational, multiple,