The quality of this transition is best visualized by a straight line drawn between two circles: the line's only point of contact with each circle is tangential.

用最明显的图形来描述这个过渡的特性就是：当在两个圆之间绘制一条直线，直线与每个圆只有一个交点时，那么这条线就是两个圆的切线。

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This contact would give the girl a vision of her future self. It would, Coyle emphasizes, give her a glimpse of an enchanted circle she might someday join.

这种接触会带给这个女孩对她未来自己的幻象，Coyle强调说，这会给她对某一天她也许会加入的一个充满魅力的社交圈的一个印象。

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The reporter contacted Shenzhen more than sellers, most of which the seller has left contact address in Huaqiang North commercial circle.

记者联系了多名深圳卖家，其中大部分卖家所留的联系地址都在华强北商业圈。

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