Urethano
氨酯基
🗣️ 情景例句
I've got three days off next week.
下星期我有三天假。
You should wear a raincoat, It's rainy today.
你应该穿一件雨衣，因为今天下雨。
But he added music, which he wrote himself.
但是他给影片配上了他自己创作的音乐。