Ephemerida
n. [昆] 蜉蝣目（等于Ephemeroptera）
🗣️ 情景例句
Different kinds of activities, such as commenmorative meetings, planting trees,
举行各种各样的活动，例如召开纪念大会，植树造林，
I was born and raised in Beijing, and I am 25 years old.
我出生在北京，在那里长大，我今年25岁了。
He is heavily insured against death.
他给自己投了巨额的人身保险。