3 sentences

1. 你们是无辜的旁观者。

   nǐ​men shì wú​gū de páng​guān zhě.

   You are innocent bystanders.

   Source: OpenSubtitles

2. 她喜欢旁观。

   tā xǐ​huan páng​guān.

   She likes to watch.

   Source: OpenSubtitles

3. 他只是站在那里旁观，并没有上前帮忙。

   tā zhǐ​shì zhàn zài nà​li páng​guān, bìng méi​yǒu shàng​qián bāng​máng.

   He just stood there looking on and didn't step forward to help.

   Source: Dong Chinese Dictionary