2 sentences

1. 参观者请按顺序排队进入展厅。

   cān​guān​zhě qǐng àn shùn​xù pái​duì jìn​rù zhǎn​tīng.

   Visitors, please line up in order to enter the exhibition hall.

   Source: Dong Chinese Dictionary

2. 博物馆内禁止拍照，请参观者自觉遵守规定。

   bó​wù​guǎn nèi jìn​zhǐ pāi​zhào, qǐng cān​guān​zhě zì​jué zūn​shǒu guī​dìng.

   Photography is prohibited inside the museum; visitors are requested to voluntarily comply with the regulations.

   Source: Dong Chinese Dictionary