1)for the sake of/for ones sake 为……起见，为了……
His family moved to the countryside for the sake of his sons health.
他一家为了他儿子的健康搬到乡下去。
He betrayed his friend for moneys sake.
他为了钱而出卖自己的朋友。
2)for reasons of 因……理由，为……缘故
The road has been closed for reasons of safety.
为了安全起见，路已经被封了。
They switched to a new product for reasons of better profits.
为了更好地获得，他们转向了一种新产品。
