draw a circle on the cardbourd and then cut it the centre and cut it 准确

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draw a circle on the cardbourd and then cut it the centre and cut it 准确

draw a circle on the cardbourd and then cut it the centre and cut it 准确
draw a circle on the cardbourd and then cut it the centre and cut it
准确

draw a circle on the cardbourd and then cut it the centre and cut it 准确
在纸板上画个圆,然后把圆剪在纸板中央,(就剪纸板使圆在纸板中央),再把圆剪掉
(最后的图形就是正方形的之中有个空圆)

在纸片上画一个圈,把它剪出来并剪中心