N a white frothy mass on the stems and leaves of many plants, produced by froghopper larvae (cuckoo spit insects) which feed on the plant juices (由沫蝉科昆虫吐出的)泡沫状物质 (Also called frog spit)
N（名词） a white frothy mass on the stems and leaves of many plants, produced by froghopper larvae (cuckoo spit insects) which feed on the plant juices (由沫蝉科昆虫吐出的)泡沫状物质 (Also called frog spit)