Springing
n. 船体纵向二阶波振；弹簧现象；弹性装置
🗣️ 情景例句
Susan's teddy bear.
Susan送的泰迪熊
The bird that can sing and won't sing must be made to sing.
生来能唱的鸟，不愿唱也得叫它唱。
Traffic police are sometimes very polite.
交通警有时也很客气。