The center hole will house the center guide tube that you can also see in the background.

中心孔会内务中心指导管，您也可以看到，在背景中。

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To liaise with and guide the Goods and Equipment Supply Center of the Customs Office.

联系指导总署物资装备供应中心。

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This is particularly useful to put kind (in the center outline) and scan (guide line).

这对放样(中间轮廓)和扫描(引导线)尤其有用。

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First, we'll make a big circle in the center of our screen, and we'll use it as a guide.

首先，我们在屏幕中心绘制一个大圆，作为接下来的参考。

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First, we'll make a big circle in the center of our screen, and we'll use it as a guide.

首先，我们在屏幕中心绘制一个大圆，作为接下来的参考。

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