Andy chalks the alphabet on a blackboard.
安迪在黑板上写字母。
The building is clad in a light chalkstone， which gives it an almost ethereal appearance.
建筑外表面的材料是石灰石，富于建筑洁净的外观。
Observations on the CIDAL effect of three kinds of synthetic pyrethroid chalks on bedbugs
三种拟除虫菊酯粉笔杀灭臭虫的效果观察
Influences of water interaction on the mechanical behaviour of porous chalks have been studied.
我们研究了水对多孔白垩岩得力学性质影响。
Chalks are used to write on the blackboard.
粉笔是用来在黑板上写字的。
Some desks, some seats, some chalks and a blackboard.
一些桌子、座椅、粉笔、和一块黑板。
They were drawing patterns on the blackboard in colored chalks.
他们用彩色粉笔在黑板上画图案。
A white chalk chalks white on a black blackboard.
一根白色的粉笔在黑色的黑板上写白字。
Dismiss the blackboard and chalks and make computers and floppies play the leading role in classrooms.
黑板粉笔靠边站，电脑软盘唱主角。
They were drawing patterns on the board in coloured chalks.
他们正用彩色粉笔在板上描绘图案。
Calculate the difference between the number of red chalks and white chalks.
试计算红粉笔和黄粉笔的差数。
His steed was by chalks the best.
他的马是最好的。
The girl like to collect chalks with various colors.
女孩喜欢收集各色粉笔。
Will you please fetch some chalks for me?
请你给我拿些粉笔, 好吗？
The prisoner has walked his chalks, and is off to London.
那囚犯逃走了, 逃到伦敦去了。
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