Word · Frequency #12757
trajectory
轨道；弹道；轨线
the path followed by an object moving through space
- 1.
The path an object takes as it moves.
物体运动所经过的路径。
- 2.
the path followed by an object moving through space
物体在空间中移动的路径
- 3.
The path of a body as it travels through space.
物体在空间中运动的轨迹。
- 4.
The ordered set of intermediate states assumed by a dynamical system as a result of time evolution.
动力系统随时间演变所经历的一系列中间状态的有序集合
- 5.
A course of development, such as that of a war or career.
发展过程,如战争或职业的历程
物体运动所经过的路径。；物体在空间中移动的路径；物体在空间中运动的轨迹。；动力系统随时间演变所经历的一系列中间状态的有序集合；发展过程,如战争或职业的历程
In use
Mission control tracked the rocket's trajectory until it reached orbit.
Engineers calculated the ball's trajectory to predict where it would land.
We watched the trajectory of the falling leaves as they drifted to the ground.
the trajectory of sth
trajectory 常与 of 连用，说明运动物体或路径的主体。
The trajectory of the rocket was tracked by radar.
火箭的轨道由雷达跟踪。
follow a trajectory
follow 在此表示“沿着……行进”，与 trajectory 搭配指沿某路径运动。
The missile followed a curved trajectory.
导弹沿曲线弹道飞行。
be on a trajectory
on a trajectory 后常接 toward/into 等介词短语，表示运动方向。
Connections
Collocations
- ballistic trajectory
- 弹道轨迹
- The missile followed a high ballistic trajectory before re-entering the atmosphere.导弹在重新进入大气层之前沿着高弹道轨迹飞行。
- flight trajectory
- 飞行轨迹
- Air traffic controllers monitor each aircraft's flight trajectory.空中交通管制员监控每架飞机的飞行轨迹。
- trajectory of a projectile
- 抛射体的轨迹
- Students calculated the trajectory of a projectile in the physics lab.学生们在物理实验室计算抛射体的轨迹。
- curved trajectory
- 弯曲的轨迹
- The planet follows a curved trajectory around the star.这颗行星围绕恒星沿弯曲的轨迹运行。
- trajectory calculation
- 轨迹计算
- The engineers performed a trajectory calculation for the space probe.工程师们对太空探测器进行了轨迹计算。
Learner notes
Memory Tip
联想：一颗炮弹飞出的弧线，trajectory 就是它经过的轨道/弹道。
Context & Register
语域：mixed 常见场景：physics、aerospace/ballistics、figurative business or career talk 本义指物体在空间中行经的路径，通常出现在物理、航天、弹道等比较正式的科技语境；也常见于商业或职业讨论中的比喻用法（如“发展轨迹”）。正式程度随语境变化，日常口语中较少直接用这个词。
Pronunciation & Spelling
Directory 与 trajectory 在美式发音中押韵（重音都在第二个音节，/ɛktɚi/ 相同）。factory、territory、victory、category 虽然拼写相似，但重音多在第一个音节，且元音不同，所以不押韵。
Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.