Levulinamide
4-氧(代)戊酰胺
🗣️ 情景例句
How long will it take for my mail to reach its destination?
我的信件到达目的地要多久？
Slow and steady wins the race.
跛鳖千里。
After that day they were separated, never to see each other again.
那日一别，他们再没重逢。