讲解文本：
keep your chin up 别灰心，别气馁，保持斗志 You'll have a better day tomorrow. Just keep your chin up. 明天你会好起来的，别灰心！ I know this is hard for you, but try to keep your chin up. 我知道这对你一定是有困难，但别灰心！
疯狂练习吧！
