Can you describe a circle within a square?
你能在正方形里做一圆圈吗？
形容一个圆圈。
Describe a circle on the floor with a piece of chalk.
用一支粉笔在地板上画个圈。
It is easy to describe a circle if you have a pair of compasses.
如果你有一副圆规，就能很容易画一个圆。
The moon doesn't describe a circle round the earth, but rather an ellipse .
月球绕地球运行的轨道不是浑圆的，而是椭圆的。
The software is intuitive, so the robot can describe a perfect circle, say, if the operator shows it just a few points.
它们的软件是直觉系的，只要操作者演示几点，这些机器人就可以完美的模仿。
Then the slider motion is analyzed by the state-plane method. A limit circle which can describe the path of the creeping motion is found out.
然后用相平面法分析滑块的运动规律，并确定爬行运动的相轨迹——极限环。
Then the slider motion is analyzed by the state-plane method. A limit circle which can describe the path of the creeping motion is found out.
然后用相平面法分析滑块的运动规律，并确定爬行运动的相轨迹——极限环。
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