Ron
abbr. 研究法辛烷值（Research Octane Number）
✅ 同义词
🗣️ 情景例句
Good night, Son.
晚安， 儿子。
Fishing is often frustrating.
钓鱼常常会遭到挫败。
I'm afraid not. She isn't here at the moment. Can I take a message?
恐怕不行。她这会儿不在。有话要我转告吗？