lichen [ˈlaɪkən]

例句:

• The plaited door snail is found in woodlands and grazes on algae and lichen.
  来自BBC
• The stone stairway was covered with lichen.
  那石级长满了地衣.
  
• Lichen is a form in which green or bluegreen algae and a fungus live together symbiotically.
  地衣是一种绿藻或蓝藻与一种真菌共生的形式.
  
• The case was diagnosed as lichen sclerosus et atrophicus with localized scleroderma.
  患者诊断为硬化萎缩性苔藓合并局限性硬皮病.
  
• Lichen sclerosus mostly affects the skin around the genital and anal areas.
  来自BBC
• On the oldest tomb, the cursive script is weathered and covered in lichen.
  来自BBC