蝉壳
词典PERIOSTRACUM CICADAE：蝉退；蝉壳；知了壳。
1. 蝉壳的解释
1. 她在树上搜寻着蝉壳。 She scoured the trees looking for cicada shells.
2. 蝉壳
2. 他刚从他的蝉壳里挣扎出来，进入了这个世界。 He'd only just broken out of his casing and entered the world.
3. 蝉壳
3. 从蝉壳制备壳聚糖 Preparation of chitosan from the shell of cicadas