Ron
abbr. 研究法辛烷值（Research Octane Number）
✅ 同义词
🗣️ 情景例句
I'm really excited about seeing Grandpa.
一想到要见到爷爷， 我就觉得兴奋。
How many pieces are you going to buy?
你要买几个？
So I will receive and sign it overnight.
那么，我明天就可以收到并且签上名了。