disheartened

adj.

沮丧的，灰心的；

v.

使沮丧，使泄气；使失去勇气(dishearten的过去式和过去分词)；

1. The disheartened instructor tried vainly to arouse their interest.
   沮丧的教师徒劳地试图激起他们的兴趣。

Disheartened: need ROC curve.
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