改进题：Needs are the basic, often instinctive, human forces that motivate a person to do something.

译文：各种需要是人类基本的、本能的驱动力，它促使一个人去从事某件事情。

改进题：Needs are the basic, often instinctive, human forces that motivate a person to do something.

译文：各种需要是人类基本的、本能的驱动力，它促使一个人去从事某件事情。

改进的译文：各种需要是人类基本的、通常又是出于本能的驱动力，这各种驱动力促使一个人去从事某件事情。