The scheme was all a big con.

这计划完大。

His remorse is just an artifice to gain sympathy.

他悔恨只一种,为了博取同情。

The investigation has laid bare their fraudulent scheme.

这调查把他们暴露无遗。

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

这一可耻。他竟然有脸说这样话。

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

我忙不迭地补充说，我当时对那一无所知。

This sale sounds like sharp practice.

这桩买卖好像。