英语词汇“blackboard”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	blackboard
释义	Word Frequency blackboard (ˈblækˌbɔːd) noun a hard or rigid surface made of a smooth usually dark substance, used for writing or drawing on with chalk, esp in teaching
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