Yet we need not lose heart over this bad habit.

然而，我们不必对这种坏习惯丧失信心。

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Some people lose heart when they come across failures while others rise to the challenge.

一些人在面对失败之时灰心丧气而另一些人则迎接这一挑战。

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He appealed to his countrymen not to lose heart.

他呼吁同胞们不要灰心丧气。

《柯林斯英汉双解大词典》

If you ask him if it's our people're gonna go, man will lose heart because of the theme of The Magnificent Ambersons that take you leave the way.

如果你问他我们人民将何去何从，人们会灰心丧气，因为《安巴逊家族》的,主题会让你无路可走。

麻省理工公开课 - 电影哲学课程节选

If you had trouble accessing the IRS Web site in February or March, you shouldn't lose heart, Lindsay says.

CNN: Sci-Tech - E-filing eases way for tardy taxpayers

Bristol may be dressing itself up for sale, it will lose its two top products (Plavix for heart disease and Abilify for mental illness) within four years, and ImClone's pipeline of experimental drugs contains two threats to Erbitux sales that ImClone controls outright.

FORBES: BristolClone: What Took So Long?