n.地衣；青苔
Caribou eat moss, lichen and green plants. 北美馴鹿的主要食物是地衣、苔蘚和綠色植物。
The stone stairway was covered with lichen. 那石級長滿了地衣。
The rock is full of lichen. 巖石上長滿了青苔。
Lichen is the dominant life-form that covers the surfaces of stones and trees. 青苔是生長在石頭和樹木表面的主要生物。
地衣類,地衣
