su·per·in·cum·bent英ˌsjuːpərɪn'kʌmbənt美ˌsuːpərɪn'kʌmbənt 基本英英 adj.横在上面的⁴⁰;在上面的⁴⁰;自上面的²⁰名词superincumbence Adjective: lying or resting on and exerting pressure on something else;
superincumbent layers of dead plants cut off the air and arrested decomposition