motivation

英 [mtven] 美 [motven]

n.动机;动力;诱因

复数： motivations

例句：Unless you are trying to lose weight to please yourself, it's going to be tough to keep your motivation level high

除非减肥是为了悦已，否则很难保持积极性。

Now a third and far more significant motivation presents itself.

目前又出现了支持这四个目标的第三个理由。