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- 谁把我写在黑板上的数字擦掉了？
Who's rubbed my figures off the blackboard?
- 黑板在教室的前面。
The blackboard is in the front of the classroom.
- 老师在黑板上写出新单词。
The teacher wrote down the new words on the blackboard.
- 请抬起头来，看黑板。
Please raise your head and look at the blackboard.
- 老师用一支粉笔在黑板上写字。
The teacher wrote on the blackboard with a piece of chalk.
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