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
An economic recession now seems more than likely.
现在看来，经济衰退的可能性相当大。
What time does the first train to Boston leave?
第一班去波士顿的列车什么时间开出呢？
My friend Li Lei likes mooncakes with meat.
我的朋友李雷喜欢放有肉的月饼。