usnea /'ʌsniә/ 📖 中文释义 n. [植]松萝 🔗 释义中的汉语词松萝 📘 English Definition(英文释义) n widely distributed lichens usually having a greyish or yellow pendulous freely branched thallus ← usnaric acid U 字母词表 Usnea angulata →