topsoilKK [ˋtɑˏpsɔɪl] /ˈtɑˌpsɔɪl/名詞1表土、表層土、上層土Heavy rain washed away the topsoil from the bare hillside.大雨把光禿山坡上的表土沖走了。2培養土、覆蓋用土We ordered a truckload of topsoil for the new flower beds.我們訂了一卡車的培養土來鋪新花圃。