Laetanine
四氢二甲氧基二苯并喹啉二醇
🗣️ 情景例句
You had better study hard.
你最好努力学习。
What do you want to do after graduation?
你毕业后想干什么？
One case concerns and eleven-year-old schoolgirl, Vera Petrova,
其中有一例谈到有一个名叫维拉。彼托洛娃的11岁学生。