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单词	usnic acid
释义	us·nic acid (ŭsnĭk) n. An antibacterial substance, C18H16O7, obtained from lichens of several genera, including Usnea.
随便看	centime centimeter centimeter-gram-second system centimo centipede centipede grass centipoise centner cento centr- centr- centra central Central African Republic Central America Central American central angle Central Asia Central Asian central bank central city centralism centralist centralistic centrality

英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。