Pterylology
羽毛学
🗣️ 情景例句
If my GPA isn't high enough I can't play any sports.
如果我的平均学分不够高，我就不能再参加体育活动了。
Bottoms up!
干杯！
All at once, I noticed that my wife seemed to be filled with alarm.
突然，我注意到妻子十分惊恐。