trajectory

tra-,转移，穿过，-ject,扔，投射，词源同 project,jet.引申词义轨迹，踪迹，弹道等。

trajectory (n.)

"path described by a body moving under the influence of given forces," 1690s, from Modern Latin trajectorium, from trajectorius "of or pertaining to throwing across," from Latin traiectus "thrown over or across," past participle of traicere "throw across, shoot across," from Latin trans- "across" (see trans-) + icere, combining form of iacere "to throw" (see jet (v.)). Middle French and Middle English had trajectorie as "end of a funnel," from Latin traiectorium.

1. My career seemed to be on a downward trajectory.

我的事业似乎在走下坡路。

2. It is not difficult to sketch the subsequent trajectory.

很容易描绘出它们最终的轨迹.

3. The path followed by a projectile is called its trajectory.

抛物体所循的路径称为它的轨道.

4. The missile deflected from its trajectory.

导弹已偏离轨道.

5. From then on it must coast in a trajectory, or flight path, to its target.

从那时起,它就得沿着弹道, 即沿着飞行航线滑向其目标.