dis-, 不，非，使相反。hearten, 鼓励。

1. Don't let this defeat dishearten you.

不要因这次失败而气馁。

来自《权威词典》

2. He was convinced that America so weakened would dishearten allies who depended on us.

他确信,美国如果这样削弱下去,会使依赖我们的盟友灰心丧气.

来自辞典例句

3. Don't let this set - back dishearten you.

不要因这一挫折而气馁.

来自互联网