Ephemerida
n. [昆] 蜉蝣目（等于Ephemeroptera）
🗣️ 情景例句
ready for the graduation ceremony,
为毕业典礼做准备，
How much is a round-trip ticket to Beijing?
一张到北京的来回票要多少钱？
I don't want a mink coat!I want to see the world.
我不要貂皮大衣。我要去见风世面。