I knew from my own experience that he could lose money at bridge with a good grace.

我的处世经验告诉我，他打桥牌输起钱来时一定是大大方方的。

He confessed his ignorance with a good grace.

他大方地承认了自己的无知。

They all waved and called to her as they went by and she tried to respond with a good grace, but it was difficult.

他们经过时都向她挥手致意，她也尽量装出高兴的样子来回答，但那是很困难的。