Purpurogenone
. 红紫精酮
🗣️ 情景例句
I couldn't help laughing.
我忍不住笑出来。
Don't forget to put stamps on the letter before you mail it.
不要忘记在寄信以前把邮票贴在信封上。
A gifted American psychologist has said,'Worry is a spasm of the emotion;
烦恼是感情的发作，