2 sentences

1. 腹腔内包含许多重要的内脏器官。

   fù​qiāng nèi bāo​hán xǔ​duō zhòng​yào de nèi​zàng qì​guān.

   The abdominal cavity contains many important internal organs.

   Source: Dong Chinese Dictionary

2. 腹膜是覆盖腹腔内壁和器官的一层薄膜。

   fù​mó shì fù​gài fù​qiāng nèi bì hé qì​guān de yī céng bó​mó.

   The peritoneum is a thin membrane that lines the abdominal cavity and covers the organs.

   Source: Dong Chinese Dictionary