Ri
[化] 放射性同位素
✅ 同义词
📖 牛津释义
RI
abbr 缩写 = (Brit) (on coins) Queen and Empress; King and Emperor (Latin Regina et Imperatrix; Rex et Imperator) （钱币上的）女王和女皇, 国王和皇帝（源自拉丁文Regina et Imperatrix; Rex et Imperator）.
🗣️ 情景例句
Malcolm, you worked on the Spaceport project?
Malcolm，你曾负责 太空港 的案子？
Education for women has improved in leaps and bounds.
妇女教育十分迅速地得到了改善。
'At what time did you arrive at the station?'
“您几点钟到的火车站？”