圆的

• Given the two points, one can construct the points of intersection of the line and the circle .
  给定了两点就可以画出这直线和圆的交点。
• His face was almost round and his head was round and set close on his shoulders .
  他的脸盘差不多是滚圆的，脑袋也是圆圆的，紧挨在肩膀上。
• He investigates geometrical properties of cycloids, epicycloids, and hypocycloids .
  他研究了摆线、圆外旋轮线和四点圆的旋轮线的几何性质。
• the circumference of the circle is 2πr and the time for one revolution is 2πr/v.
  圆的周长是2r，转一圈的时间是2rv。
• He had a round face, marked by smallpox, a firm chin, incurving lips, white teeth .
  他脸是圆的，有痘瘢，下巴笔直，嘴唇没有一点儿曲线，牙齿雪白。
• The maximum shearing stress to which the material is subjected has a value equal to the radius of the circle .
  材料承受的最大剪断应力数值等于圆的半径。
• She watched winds, and snows, and rains, gorgeous sunsets, and successive moons at their full .
  她看着风风雨雨，霜晨雪夜，灿烂的夕阳，和由缺而圆的满月。
• Like other planets, mars is not perfectly round; it is flattened at the poles because of its spin .
  像其它行星一样，火星不是十分圆的，由于自转，两极稍偏。
• It was not a round pebble like the first, but a three-cornered one with sharp, flinty points .
  这块石子与前一块不同，它不是圆的，而是带有三个又尖又硬的棱角。
• His black hair fine as floss silk, hung in glossy curls about his round dimpled face .
  他圆圆的脸蛋上有一对酒窝，头上覆盖着一圈圈光滑，鬈曲、细如绢丝的黑发。