His poor performance may be attributed to lack of motivation rather than to reading difficulties.他糟糕的表现也许要归因于缺乏积极性, 而不是阅读障碍。

His prime motivation is money.他的主要动力是金钱。

The players were tired and lacked motivation.这些队员疲惫不堪, 而且获胜欲望不强。

This was the primary motivation behind their crimes.这是他们犯罪的主要动机。

The timing of the attack, and its motivations, are unknown.袭击的时间和动机未明。

There is no American geopolitical motivation for hostility between Iran and the US.伊朗和美国之间的敌对状态不存在美国地缘政治方面的动机。

Gross's skill in motivation looked in doubt when his side began the second half badly.球队下半场开局不利, 看来格洛斯激励队员的技巧值得怀疑。