grass mould

例句：

1. 1.The grass mould on the lawn is a sign of good weather.
   草坪上的草霉是好天气的标志。
2. 2.The fungus that grows on the tree bark is known as wood-rot.
   树皮上生长的真菌被称为木材腐烂。
3. 3.The mold in the air can cause respiratory problems for those with allergies.
   空气中的霉菌可能导致有过敏的人呼吸问题。