vt.使失去勇气,使失去信心
Don't let this defeat dishearten you.
不要因这次失败而气馁。
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.
Don't let this set - back dishearten you.
不要因这一挫折而气馁.