Nitronate
氮酸酯
🗣️ 情景例句
How many days will it take for my mail to reach its destination?
我的信件到达目的地要用几天？
Don't cry out before you are hurt.
还没受苦，就别叫苦。
His great flight lasted thirty-seven minutes.
他这次伟大的飞行持续37分钟。