Bi-cultural people may change their personality when they switch languages.

不同文化背景的人在转换语言时会改变他们的性格。

And pardon my French or excuse my French was used literally to indicate to the person that you were speaking to that you had switched languages and to apologize if your French wasn't quite right.

pardon my French 或 excuse my French 字面意思是向和你说话的人表示你换了语言，如果你的法语不太对而道歉。

That such big performance increases can be extracted from relatively simple changes like rounding numbers or switching programming languages might seem surprising.