一块黑板

blackboard───n.黑板

a black mark───黑斑

backboard───n.篮板；背板；后挡板

blackboards───n.黑板

blockboard───n.木芯板；夹芯板

to blackguard───无赖

a black box───黑匣子

backboards───n.篮板；背板；后挡板

blockboards───n.木芯板；夹芯板

Here are some desks and a blackboard.───这有一些课桌和一个黑板。

Here is a blackboard and two fans.───这有一块黑板，两台电扇。

What is it? It is a blackboard.───这是什么？这是一块黑板。

He began to work a problem on a "blackboard" with a piece of chalk.───他开始用粉笔在一块“黑板”上算题。

When seeing my interest in painting as a child, my mother bought me a blackboard and chalks, which were in quite a good condition then.───小时候，她看到我喜欢绘画就给我买了黑板、粉笔这些东西，这在当时是很好的条件了。

According to Saturno, the writing looks like someone's attempt to sort out a very long math problem, as if on a blackboard.───萨图诺表示，书写痕迹看起来像是有人试图在黑板上整理出很长的数学问题。

a piece of chalk or chalklike substance in crayon FORm, used FOR marking on a blackboard or other surface.───一支粉笔或带颜色的粉笔状物，用以在黑板上或其他物体表面作标记。

If I look at what happens in the y, z plane in the plane of a blackboard, it will just look like a line that goes downward with slope one.───我们来观察黑板上坐标系的yz平面，它就看起来，像一条斜率为1且向下延伸的直线。

Wall charts, projectors, multi-media, such as the addition of a blackboard made of a more connotations of the rich.───挂图、投影仪、多媒体等的加入，使得黑板的内涵更加丰富。

The knowledge sources communicated through a blackboard data structure.

The boy was figured on a blackboard.

I hate the scrape of chalk on a blackboard.

I got very good at watching a blackboard with minimum awareness.

I could see Phagu standing at a blackboard teaching particle physics.

There was a raised platform and a blackboard at the far end of the room.

Teaching off a blackboard is boring, and undoubtedly turns people off.

On a blackboard, he drew five concentric circles.

There was a blackboard with seven names chalked on it.