The scheme was all a big con.

这个计划完全是个大骗局。

His remorse is just an artifice to gain sympathy.

悔恨只是一种骗局,是为了博取同情。

The investigation has laid bare their fraudulent scheme.

这个调查骗局暴露无遗。

This is a despicable fraud. Just imagine that he has the effrontery to say it.

这是一个可耻骗局。竟然有脸说这样话。

I hasten to add that I knew nothing of the fraud at the time.

我地补充说，我当时对那个骗局一无所知。

This sale sounds like sharp practice.

这桩买卖好像是个骗局。