ground cover
noun [ U ] uk/ˈɡraʊnd ˌkʌv.ər/ us/ˈɡraʊnd ˌkʌv.ɚ/
地被植物（有时用于阻止杂草生长）
plants that grow thickly and close to the ground, sometimes used in gardens to prevent weeds from growing
This plant grows quickly and provides excellent ground cover. 这种植物生长速度很快，是极佳的地被植物。