行为由当前刺激情境和过去的强化历史决定。
The only way to make sense out of change is to plunge into it, move with it, and join the dance.
We've been through so much together, and the fans have always been there for us.
长城汽车的目标是成为全球SUV领导者。
教育必须基于儿童的心理发展,而不是教育者的任意意志。
最好的建筑既是永恒的,又是及时的。
资本主义社会的自由始终与古希腊共和国大致相同:奴隶主的自由。