blackboard

名词 n. 动词 v.
中文释义
英 /ˈblækbɔːd/    美 /ˈblækbɔɹd/|/ˈblækboɹd/

英文释义

名词 n.
  1. A large flat surface, finished with black slate or a similar material, that can be written upon with chalk and subsequently erased; a chalkboard.
    — Drawings and pictures are more than mere ornaments in scientific discourse. Blackboard sketches, geological maps, diagrams of molecular structure, astronomical photographs, MRI images, the many varieties of statistical charts and graphs: These pictorial devices are indispensable tools for presenting evidence, for explaining a theory, for telling a story.
动词 v.
  1. To use a blackboard to assist in an informal discussion.

词形变化

blackboards plural blackboards present,singular,third-person blackboarding participle,present blackboarded participle,past blackboarded past

词源

词源 1
From black + board, because such surfaces were once typically made of black slate.
词源 2
From black + board, because such surfaces were once typically made of black slate.
0 次浏览 数据来源: Wiktionary