Ephemerida
n. [昆] 蜉蝣目（等于Ephemeroptera）
🗣️ 情景例句
Susan, will you marry me?
Susan，你愿意嫁给我吗？
My brother wants to learn how to play the piano.
我的兄弟要去学弹钢琴。
If I place an order now, when would you be able to ship it?
如果现在下单子，什么时候可以出货？