Seragonin
血清促性腺激素
🗣️ 情景例句
He is working on a book about the Vietnam War.
他正在写一本关于越战的书。
Many new ideas are discovered during college years.
大部分崭新的观念都产生于大学时代。
Later, by about two weeks.
延迟，大概二个星期。