So, what they do is, the first time they might scratch at the bars, push at the ceiling, dig at the floor, howl, etc.
起初小猫可能会抓栏杆,推顶棚,挖底板,吼叫等等。
耶鲁公开课 - 心理学导论课程节选
应用推荐
模块上移
模块下移
不移动