He committed the cardinal sin of criticizing his teammates.

他犯了指责队友的大错。

I committed the physician's cardinal sin: I got involved with my patients.

我犯了从医的大忌：我跟病人有了感情纠葛。

That's cardinal sin number one.

这是罪加一等。

Wearing a suit and no socks is a cardinal sin - it's even worse than double denim.

穿西装却不穿袜子简直“罪不可恕”——甚至比双牛仔还要糟糕。

I'm sorry, but I didn't know that driving your car without permission was such a cardinal sin!

对不起，我不知道你这么忌讳别人私自开你的车。