n.护根(用以保持水分、消灭杂草等的覆盖物,如稻草、腐叶或塑料膜);
vt.用护根覆盖(植物根部或其周围地面);
例句:
A better technique is to use mulch.
一个更好的方法是使用覆盖物.
Too much mulch can restrict oxygen and water flow.
过多的地膜会限制氧气和水流.
Black plastic mulch can help keep them warm.
黑色塑料的遮盖物可以帮助他们保暖.