He is writing on the blackboard with the chalk.
他在教室里，他在黑板上写字。
Blackboard is a board with a dark smooth surface, used in schools for writing on with chalk.
黑板是一块具有黑色平滑表面的板，在学校里使用粉笔在上面写字。
A teacher is writing on the blackboard with chalk.
老师正用粉笔在黑板上写字。
You and Ray aren't writing on the chalk-board.
你和雷没有在黑板上写字。
The use of this wall as a writing surface conjures up images of Albert Einstein calculating higher math on a blackboard with chalk.
抄写员们在墙面上写字，让人想起爱因斯坦用粉笔在黑板上演算高等数学的模样。
You use your finger or stylus, choose the chalk icon (which is activated by default) and start writing on the blackboard.
你用你的手指或手写笔，粉笔选择图标(这是默认设置启动)，然后开始写在黑板上。
Judy and Karen picked up their chalk and started writing.
朱迪和卡伦拿起粉笔就开始写。
The use of this wall as a writing surface __ 4 __ up images of Albert Einstein calculating higher math on a blackboard with chalk.
抄写员们在墙面上写字，让人想起爱因斯坦用粉笔在黑板上演算高等数学的模样。
Teachers use chalk as a writing utensil.
老师们把粉笔当成了一个书写器具了。
Teachers use chalk as a writing utensil.
老师们把粉笔当成了一个书写器具了。
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