THE SMART TRICK OF BROKER ETYMOLOGY THAT NO ONE IS DISCUSSING

The working out or occupying in the brain, esp. the knowledge, in an active way; engagement in psychological motion or action: see several senses of…I'd like to be aware of why he is absent or The main reason for his absence Me gustaría saber el porqué de su ausencia知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现�