lichen
US /ˈlaɪ.kən/
UK /ˈlaɪ.kən/
名詞
地衣
a simple slow-growing plant that typically forms a low crustlike, leaflike, or branching growth on rocks, walls, and trees
範例:
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The old stone wall was covered with green and gray lichen.
古老的石牆上覆蓋著綠色和灰色的地衣。
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Some species of lichen are very sensitive to air pollution.
某些種類的地衣對空氣污染非常敏感。