Profit, he insisted, was never his motive.他坚称, 他从来没想过从中获利。

the motives and objectives of British foreign policy英国外交政策的动机及目标

One might question the motives of some politicians.有人也许会质疑一些政客的动机。

I urge you to question his motives.我强烈要求你对他的动机提出质疑。

Police have ruled out robbery as a motive for the killing.警方已排除因抢劫而杀人的可能。

They have not been able to establish a motive for the attack.对于这次袭击, 他们还没能确定其动机。

motive force动力