Motivation 的意思是驱动力, 往往指人们或社会作某事的动力，通常含有积极和正面的元素。比如说要让一个团队提高生产力，那么就要保持大家有动力 motivation，动力。

Most people said that pay was their main motivation for working.

大多数人说赚取报酬是他们工作的主要动机。

All research proposals must be accompanied by a full motivation.

所有研究计划书均须详述研究动机。

Organizations have an interest in ensuring that employee motivation is high.

各机构皆知获利之道在于确保员工士气高昂。