trajectory
trajectory — 名詞
1. the curved line a moving object makes in the air as it travels from its starting
軌跡；彈道
物體拋出或發射後行經的曲線路徑
the curved line a moving object makes in the air as it travels from its starting point to where it lands or stops, for example a ball after it is thrown or a rocket after it is launched.
Christopher watched the baseball's high trajectory as it sailed over the fence.
克里斯多福看著棒球劃過圍牆的高弧軌跡。
possessive + trajectory: object's trajectory
The rocket's trajectory was carefully calculated by the engineers in Houston.
火箭的彈道是由休士頓的工程師仔細計算的。
passive: trajectory was calculated by [agent]
On the screen, the missile's trajectory appeared as a bright red line.
螢幕上，飛彈的軌跡顯示為一條亮紅色的線。
Wind changed the trajectory of the paper airplane, sending it into a tree.
風改變了紙飛機的飛行路線，讓它飛進了一棵樹裡。
The tennis ball's trajectory curved sharply after Lukas hit it with spin.
路克斯加上旋轉擊球後，網球的軌跡急遽彎曲。
- flight path
more specific to aircraft and missiles; suggests a planned course
- arc
emphasises the curved shape of the movement
- curve
more general, less technical than trajectory
- ballistic curve
technical term for a projectile's unpowered path
文法句型
trajectory of [something]
possessive + trajectory
用法筆記
This sense always refers to a curved or arched movement through the air, not a straight line on the ground. A train follows a track, not a trajectory.
常見錯誤
2. the direction in which a situation, someone's career, or a series of events deve
發展歷程
事件、事業或局勢發展演變的方向
the direction in which a situation, someone's career, or a series of events develops and changes over time, imagined as a course leading to a particular result.
Indra's career trajectory took her from a small startup to a leading technology company.
因德拉的職業發展歷程讓她從一家小型新創公司走到頂尖科技公司。
career trajectory — common noun-noun collocation
The country's economic trajectory has been steadily upward for the past decade.
該國的經濟發展方向在過去十年間穩定上升。
economic trajectory + upward — adjective + noun + adverb pattern
The doctor explained the likely trajectory of the disease over the next few months.
醫生解釋了疾病在接下來幾個月可能的演變方向。
Meera believed her education would change the trajectory of her entire family's future.
米拉相信自己的教育將改變整個家庭的未來發展方向。
After the merger, the company's trajectory shifted from growth to stability.
合併之後，該公司的發展方向從成長轉為穩定。
- course
more general; can apply to any direction of movement or development
- direction
focuses on the intended or actual end point, not the path
- progression
emphasises forward movement step by step
- path
less formal; works for both literal and figurative uses
文法句型
possessive + trajectory
trajectory of [something]
adjective + trajectory
用法筆記
Common in figurative contexts about careers, economies, political movements, and health outcomes. The physical sense (sense 1, PHYSICAL PATH) refers to an actual curved line through air; this sense is metaphorical.