This is the center circle of the pattern.

这是图案的中心圈。

youdao

If the center of your flower is a circle, but your petals are pointy, you are probably hiding a warm heart behind a prickly defensiveness.

如果花心是圆形的，但是花瓣确是尖的，那你可能是把一颗温暖的心隐藏在多刺的防御后面。

youdao

This acceleration that is necessary to make the change in the velocity vector is always pointing towards the center of the circle.

要促使速度矢量，产生如此的变化，所需的加速度，总是指向圆心。

youdao

They have a center,and arms of matter that seem to circle the center like a pinwheel.

VOA: special.2009.04.29

When a particle moves in a circle, it has an acceleration towards the center of this size, v^2 over R.

当一个质点在圆周上运动时,它有一个指向圆心的加速度,v^2 / R

耶鲁公开课 - 基础物理课程节选

That means the acceleration is pointing towards the center of the circle and it has a magnitude a.

也就是说加速度,始终指向圆心,其模长为 a

耶鲁公开课 - 基础物理课程节选

At the center of the room is a circle of paired mannequins in which one half of each duo wears a '70s ensemble from Westwood-McLaren while the other wears a subsequent couture "take" on that ensemble.

WSJ: Loud, Fast and Nasty | Punk: Chaos to Couture | Metropolitan Museum of Art | By Laura Jacobs

But the real story lies in the center of the yellow circle on this chart.

FORBES: Connect

Generally, these manufacturer skins exist with the claimed goal of enhancing the platform's stock functionality, but we actually found a case on the Epic where the opposite is true: the phone's lock screen consists of a circle in the center of the screen that you drag up to unlock... and that's it.

ENGADGET: Epic 4G review