3 sentences

1. 我能理解你的挫败感。

   wǒ néng lǐ​jiě nǐ de cuò​bài gǎn.

   I can understand your frustration.

   Source: OpenSubtitles

2. 保持虚假的外表是令人筋疲力尽和自我挫败的。

   bǎo​chí xū​jiǎ de wài​biǎo shì lìng​rén jīn​pí​lì​jìn hé zì​wǒ cuò​bài de.

   Maintaining a false facade is exhausting and self-defeating.

   Source: CCMatrix

3. 别让他挫败了你的自信。

   bié ràng tā cuò​bài le nǐ de zì​xìn.

   Don't let him shake your confidence.

   Source: OpenSubtitles