反复无常，出尔反尔，靠不住 (~with sb/sth)

One must learn to play fast and loose survival skills .

一个人必须学会在反复无常中生存下来的本领。

Play fast and loose is perceptual and rational .

反复无常是感性又是理性的。

That guy has a bad reputation of play fast and loose with the girls around him .

那家伙名声很坏，对待他周围的女孩们朝三暮四。

If so then let everything play fast and loose with it .

既然如此，就还是让一切随它反复无常下去吧。

He had been allowed to play fast and loose long enough .

大家容忍他反复无常地玩弄手腕够久啦。

From a philosophical perspective play fast and loose showed materialistic things in the evolving trend is the product of contradiction and unification .

从哲学上看，反复无常表现了唯物主义的万事万物在不断发展变化的大趋势，是矛盾和统一的产物。

How can you play fast and loose with a girl 's affections ?

你怎么可以玩弄一个姑娘的感情呢？

Don 't begin by trying to play fast and loose with me .

别想跟我耍花腔吧。

He didn 't want to play fast and loose with the girl so he accepted her love .

他不想敷衍这个姑娘，于是接受了她的爱。

Play fast and loose should how to evaluate this is a question .

反复无常应该如何评价这是个问题。