Yf
abbr. 黄热病（Yellow Fever）
🗣️ 情景例句
In what subject did you get the highest marks?
你哪门科目得分最高？
It's no use pumping a dry well.
徒劳无益。
but they do underline the general principle that the relationship between elephant and mahout is the key to successful training.
但强调了一项基本原则，象和驯象员之间的关系是驯象成功与否的关键。