Ron
abbr. 研究法辛烷值（Research Octane Number）
✅ 同义词
🗣️ 情景例句
But when do they do it?
但是什么时候动手术？
The fowler's pipe sounds sweet until the bird is caught.
捕禽人笛声悠扬，直吹得鸟儿落网。
It's nothing serious.You'd better have a good rest.
（病情）不太严重。你最好好好休息一下。