When you bite the hand that feeds you, you are being unthankful, ungrateful, unappreciative.

当你" bite the hand that feeds you" 时，你是不懂得感恩的，忘恩负义的，不领情的。

Sir Gripe, when he realizes that Margery has helped him, is unthankful and mad that she had saved him.

当格雷普爵士意识到玛格丽帮助了他时，他并不感激， 而且对她救了他感到生气。

O dear good Joe, whom I was so ready to leave and so unthankful to, I see you again, with your muscular blacksmith's arm before your eyes, and your broad chest heaving, and your voice dying away.

噢，亲爱的好乔，我准备离开他，也非常感激，我再次见到你，你肌肉发达的铁匠的胳膊在你眼前，你宽阔的胸膛起伏，你的声音消失了。