NPCs should have understandable motivations, real character flaws, and believable relationships with the player and with each other.

NPC（非玩家控制）应该有可接受的智能化程度，性格真实得带有瑕疵，还有与玩家或者其他角色建立起的可信任关系。

youdao

Your test player population is not going to be random sample. It will be a self-selected sample whose average motivations and behavior will be biased.

你的测试玩家人口不是随机样本，而是特定的样本拥有相同的动机和行为也会产生偏向。

youdao

The motivations come on their own, " said the player, who then welcomed like this the new coach Nedo Sonetti: "He's very expert, he knows what to do in such moments to improve the morale of the team.

比赛的动力会自然而然的出现。”他随后向新任主教练内多。索内蒂表示了欢迎：“他是一名专家，他知道在目前的形式下应该如何做才能提升球队的士气。

youdao