3 sentences

1. 苑老师正在实验室里给学生们讲课。

   Yuàn lǎo​shī zhèng​zài shí​yàn​shì lǐ gěi xué​sheng men jiǎng​kè.

   Teacher Yuan is giving a lecture to students in the laboratory.

   Source: Dong Chinese Dictionary

2. 他在这座艺术之苑里潜心创作了多年。

   tā zài zhè zuò yì​shù zhī yuàn lǐ qián​xīn chuàng​zuò le duō nián.

   He has devoted himself to creation in this garden of art for many years.

   Source: Dong Chinese Dictionary

3. 这座园林曾是皇室禁地，如今已不再是私人林苑。

   zhè zuò yuán​lín céng shì huáng​shì jìn​dì, rú​jīn yǐ bù zài shì sī​rén lín yuàn.

   This garden used to be a royal restricted area; today, it is no longer a private garden.

   Source: Dong Chinese Dictionary