这样的话靠观察这张图片,圆的中心在哪就可以知道？

And, now, I think I know just by looking at the picture where the center of mass of this circle will be, right?

youdao

用牙签或者小刀从圆的中心向四面划，形成蜘蛛网的形状。

Drag toothpick or knife through sour cream from center outward to make spider web design.

youdao

从中心的圆向外画一条短线。

Draw a short line from the centre circle outwards.

youdao