我看不清老师在黑板上写了什么。
他在黑板上慢慢地、清晰地解释了一切。
He explained everything slowly and clearly on the blackboard.
你记得它的用途或者当老师在黑板上写字时它发出的声音吗？
Are you remembering what it is used for, or the sound it makes when the teacher writes on the blackboard?
我要先始于在黑板上写一些数字。
当老师在黑板上写下一个重要的术语时，你应该认真地把它抄在笔记本上。
The instructor writes an important term on the chalkboard, and you dutifully copy it in your notebook.
老师们将不再用粉笔在黑板上写字。
他在教室里，他在黑板上写字。
谁把我在黑板上的数字擦掉了？
我讨厌粉笔在黑板上刮的声音。
在黑板上贴上很多图片或者单词。
老师也不用粉笔在黑板上写字。
粉笔是用来在黑板上写字的。
李老师在黑板上写着些什么。
老师正用粉笔在黑板上写字。
我在黑板上写了两条引用语供你们思考。
I've put two quotations on the board for your consideration.
指甲在黑板上刮擦的声音真的很恼人。
The sound of fingermails scraping on a blackboard is really annoying.
粉笔在黑板上发出吱吱声。
你和雷没有在黑板上写字。
老师用彩色粉笔在黑板上勾勒出中国的边界。
The teacher delineated China on the blackboard with a coloured chalk.
我还真不知道画了一个带光环的笑脸在黑板上。
I don't really know draws a smiley face on the board connected to a halo.
师生共同寻找答案中的关键词并板书在黑板上。
Let's write some key words of the answers on the blackboard.
当我说和弦进行，我想今天我在黑板上写过这个词。
If I said "chord progression" — I think we have that term up on the board today.
然后在黑板上我们做了k1比k 2大得多的例子。
不，是老师在黑板上拖拽粉笔的声音真让人觉得难受。
No. The teacher is dragging the chalk over the blackboard. It set my teeth on edge.
如果你看不明白这个旋转的话，我可以在黑板上再做一次。
And, in case you have trouble reading the rotated picture, let me redo it on the board.
爱瑞卡使劲把我推开，擦去黑板上的乱线，开始在黑板上写答案。
Erica ran over and pushed me out of the way and started to erase the scribble and write in her answer.
爱瑞卡使劲把我推开，擦去黑板上的乱线，开始在黑板上写答案。
Erica ran over and pushed me out of the way and started to erase the scribble and write in her answer.
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