keep one's chin up 不要气馁 不要灰心 保持斗志 挺起胸膛 振作起来 是鼓励人的.
她总是保持斗志.她总是昂首挺胸.
eg1 Keep your chin up,stick to it.
别灰心,挺起你的胸膛,坚持下去.
2 Keep your chin up.Nothing is impossible to a willing heart.
昂首挺胸.有志者,事竟成.
3 When her husband died,the woman had to keep her chin up for the sake of the children.
丈夫死后,那妇人为了她的孩子不得不鼓起生活的勇气.