If you look at this point where the hyperbola and the circle touch each other, first of all, I don't know which circle I am going to look at.
来看一下这一点,这里双曲线和圆刚好接触的地方,首先,我不知道我要看的是圆上面的哪一点。
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。
I became a socialite on the London party scene: my circle at one point comprised thousands of girls.
我变成了伦敦派对场景上的交际之星,我的社交圈有以千计的女孩。
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