[TOP]lichen li·chen / ˈlaikən; <ʃOŋð color="#ˌdˌdˌd">ˈlitʃən / noun əu, ɔ] a very small grey or yellow plant that spreads over the surface of rocks, walls and trees and does not have any flowers 地衣 ⇨ compare moss[TOP]lichen li·chen / ˈlaɪkən ; ˈlaɪkən / noun [U] 1. a grey, green, or yellow plant that spreads over the surface of stones and trees 地衣; ⇨ moss [TOP]lichen['laɪ.kən] ['lɪtʃ.ən] noun countable or uncountable » a grey, green or yellow plant-like organism that grows especially on rocks, walls and trees 地衣 [TOP]lichen ●○○○○
1.N-MASS 物质名词 地衣Lichen is a group of tiny plants that looks like moss and grows on the surface of things such as rocks, trees, and walls.