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- Something of circular form; a circle or an orbit. 圆形物体圆形物体; 圆圈或环形轨道
- To place into an orbit, a trajectory, or a stream. 置于放入一个轨道、弹道或潮流中
- The moon travels in an orbit around the earth. 月球在绕着地球的轨道上运行.
- an orbital route 轨道
- To pin down the size of an orbital, we take a contour surface. 为束缚住轨道的大小，我们取一等值面。
- The point at which an orbit crosses the ecliptic plane going north. 天体往北运行时经过的交点。
- The point at which an orbit crosses the ecliptic plane going south. 天体往南运行时经过的交点。
- Make an orbit to the right of BH, due to traffic congestion. 在BH上空绕飞一圈，因活动繁忙。
- This motion of an object in an orbit about a center is called revolution. 像这种一个物体环绕某个中心所作的轨道运动叫做公转。
- The point of an orbit around the moon farthest from the moon's center. 远月点绕月轨道上离月亮中心最远的一点
- This motion of an object in an orbit about a center as called revolution. 象这种一个物体环绕某个中心所作的轨道运动叫做公转。
- Traveling in an orbit that passes over a planet's north and south poles. 行经极地的在一条经过一行星南北极上空的轨道中运行的。
- Each planet traces an orbit around the sun as if no other planets were present. 每一个行星绕着太阳作轨道运行，就像不存在其它行星那样。
- An orbiting electron in an atom will have a magnetic dipole moment. 一个原子中旋转的电子会有磁偶极距。
- An orbital polisher is a light machine used to apply and remove polishes, glazes and waxes. 轨道抛光机是一种轻型机器用来消除抛光剂，釉和蜡的。
- Unlike a direct-drive buffer, an orbital polisher has a special head that rotates in a random, circular motion. 与直接抛光机不同，轨道抛光机的特殊头部牵引机身做任意的循环运动。
- The point in an orbit most distant from the body being orbited. 最远点轨道上距被绕行天体最远的一点。
- Later simulations show that even a companion with an orbit as wide as Neptune's could scoop up an accretion disk. 后来的数值模拟结果显示出，即使伴星的轨道半径大如海王星的轨道，它仍可汲取物质而形成吸积盘。
- An overland route is comparatively safe. 陆路相对来说安全些。
- Any emitted photons are trapped into an orbit by the intense gravitational field; they will never leave it. 恒星发出的任何光子都被强大的重力场所吸引，使其陷入其周围轨道，永远也不会逃逸。
