最佳答案
lose heart[英][lu:z hɑ:t][美][luz hɑrt]v.丧失勇气; 心灰意冷; 垂头丧气; 例句1.Don't lose heart, whatever difficulties you meet.无论遇到什么困难，不要灰心。
2.He appealed to his countrymen not to lose heart.他呼吁自己的同胞不要丧失信心。
3.If that trend continues, investors could lose heart.如此趋势持续或会令投资者失去信心。