New words：

discourage [dis'kʌridʒ] v.阻止；劝阻；使泄气；使灰心；阻拦；使丧失信心

Sample Sentences：

She was discouraged by setbacks.
The rain discouraged us from going out.
I was never discouraged against learning English.
He is easily discouraged by difficulties and obstacles.

setback ['setbæk] n. 挫折；阻碍
obstacle ['ɔbstəkl] n. 障碍；障碍物；阻碍；绊脚石

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