我认识他们中的许多人，他们多年专注奉献和无私服务，从未曾有过任何不纯动机的迹象。

I know who many of these people are and have never seen any sign of mixed motives, rather years of dedicated and selfless service.

youdao

（支持与反对）双方均有人出于善意，也都有动机不纯者。

There are people of goodwill on both sides, and actors with murkier motives.

youdao

我们的每一个行动在某种程度上都是动机“不纯”的，因为我们是普通人，不是圣人。

Every action is in some way 'impure' because we are human beings, and not saints.

youdao