noun🔗Share地衣 Any of many symbiotic organisms, being associations of algae and fungi, often found as white or yellow patches on old walls, etc."The old stone wall had many lichens growing on it, small white and yellow patches. "这面古老的石墙上长满了地衣，呈现出许多白色和黄色的小斑块。organismplantbiologyenvironmentnatureecologyChat with AIVocabulary GamePractice Reading
noun🔗Share蔓延物，藓类 Something which gradually spreads across something else, causing damage."The dampness in the basement fostered a lichen that slowly spread across the walls, damaging the paint job. "地下室的潮湿环境滋生了一种蔓延物，像藓类一样慢慢地爬满墙壁，损坏了油漆。environmentbiologyChat with AIVocabulary GamePractice Reading
