mulchKK [mʌltʃ] /mʌltʃ/发音名词1覆盖物、护根层园艺We spread a thick layer of mulch around the young trees.我们在小树周围铺了一层厚厚的覆盖物。动词1铺覆盖物、覆盖护根园艺Mulch the flower beds before the first frost arrives.在第一次结霜之前,先在花圃铺上覆盖物。用这个字练口说→