Ephemerida
n. [昆] 蜉蝣目（等于Ephemeroptera）
🗣️ 情景例句
Please help me to get things straight.
请帮助我把事情搞好。
Put the shoe on the right foot.
责备应受责备者，表扬应受表扬者。
The students are going to take the test in two days' time.
学生们准备在两天后就接受测验。