Reinforcement is the central factor in the acquisition of new behavior patterns.
I like to be a free spirit. Some don’t like that, but that’s the way I am.
我不喜欢说太多,我更喜欢让比赛替我说话。
Security is not a feature, it's a foundation.
农业的效率不仅仅是产量的问题;它关乎资源管理。