Celestial mechanics
n. 天体力学，引力天文学
🧩 词语组成解析
celestial
[sə'lɛstʃəl]
adj. 天的，天空的;
n. 天人，神仙;（指封建时代的）中国人，天朝之人;
cel 天空 + est最 + ial 属于...的 → adj.天上的 n.天人
🗣️ 情景例句
OK. By the way, tell your wife she throws a successful party.
好。还有，请告诉你夫人，她办了一个很成功的宴会。
Won't you have a bit of this cake?
请尝一点蛋糕吧！
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
但是，历史学家企图重现遥远的过去可是一项艰巨的任务，