Ephemerida
n. [昆] 蜉蝣目（等于Ephemeroptera）
🗣️ 情景例句
Yes, I have been working in an advertisement company in the last two years.
是的，在过去两年里，我一直在一家广告公司工作。
What are you going to do with the books?
你打算拿这些书怎么办？
Oh dear! Where can I go if I want to smoke a cigarette?
天啊！我该到什么地方吸烟呢？