轨迹

• ピンイン: guǐ jì
• 漢字の分解: 轨 = 车 (vehicle) + 九 (phonetic) — a rail or track; 迹 = 辶 (movement) + 亦 (also) — a trace or footprint

意味

軌跡（軌道）

In physics, it refers to the path of a projectile or moving object. Metaphorically, it describes the development arc of a person's life, career, or a country's historical course. Common in academic analysis, biography, and reflective writing. 人生轨迹 (life trajectory) is a frequently used compound.

例文

1. 卫星精确按照既定轨迹绕地球运行，误差极小。
2. 这本传记详细记录了他从贫困到成功的人生轨迹。
3. 历史的轨迹表明，和平从来不是凭空而来的。

使い方ガイド

場面: physics, biography, history, analysis

トーン: analytical

正しい言い方

• 通过分析数据，科学家成功重建了彗星进入大气层的轨迹。(By analysing the data, scientists successfully reconstructed the trajectory of the comet as it entered the atmosphere.)
• 这位改革者的政治轨迹折射出整整一代人的历史命运。(This reformer's political trajectory reflects the historical destiny of an entire generation.)

避ける言い方

• 他的购物轨迹很奇怪 — 轨迹 fits best for meaningful life paths or physical movement; for casual shopping patterns say 他的购物习惯很奇怪

起源と歴史

轨 (rail/track) + 迹 (trace/mark left behind). Together: the trace left along a track — the path or course followed by something over time.

文化的背景

世代: All ages

社会的背景: Universal