Ephemerida
n. [昆] 蜉蝣目（等于Ephemeroptera）
🗣️ 情景例句
Then, in college, I became good at it.
然后， 在大学， 我变得很精于数学。
We can't decide where to go.
我们不能决定去那里。
modern states 'invest'in institutions of learning to get back 'interest'
现代国家对教育机构投资，收回的"利息