| 单词 | trajectory |
|---|---|
| 音标 | [trə'dʒekətəri] |
| 解释 | n.(抛射物)弹道轨道 |
| 红宝书 | 【英】 n. (抛射物)弹道轨道(th e curve that a body describes in space) 【记】 tra(横向)+ject(扔)+ ory |
| 字源 | 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. |
| 不择手段背单词 | n. (抛射物或在空间运动物的)轨道 【记】tra横, ject扔, ory: 横着扔出去的轨道 |
| 趣味全助记 | 【记】tra trans 横穿，横越 + ject 抛射 【相关】abject 可怜的，deject 使沮丧，eject 逐出 喷射，inject 注射 注入，interject 插嘴, 突然插入，object 物体 反对，project 发射 放映 工程，reject 拒绝，subject 主题，traject 传导 |
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