一个会议中心甚至有磁化的金属片白板、切的形状，网络图将坚持符号城墙环绕移动，甚至可以在墙上。

One meeting center even has magnetized pieces of metal whiteboard, cut in the shape of PERT chart symbols, that will stick to the walls and can even be moved around on the wall.

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艾萨克·牛顿在其后发现彗星沿椭圆轨迹移动，处于环绕太阳的椭圆形轨道上，他还准确地预测了彗星能够一次又一次地回归。

Isaac Newton later discovered that comets move in elliptical, oval-shaped orbits around the Sun, and correctly predicted that they could return again and again.

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如果你在为直接的眼神接触而努力，将你的眼睛以固定的模式环绕着一个人的脸平缓地移动：左眼，右眼，鼻子，回到左眼·······。

If you struggle with direct eye contact, move your eyes slowly and smoothly around a person's face in a fixed pattern: left eye, right eye, nose, back to left eye and so on.

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