3 sentences

1. 我没有乳房。

   wǒ méi​yǒu rǔ​fáng.

   I don't have breasts.

   Source: OpenSubtitles

2. 医生建议女性定期进行乳房检查以预防疾病。

   yī​shēng jiàn​yì nǚ​xìng dìng​qī jìn​xíng rǔ​fáng jiǎn​chá yǐ yù​fáng jí​bìng.

   Doctors recommend that women have regular breast exams to prevent disease.

   Source: Dong Chinese Dictionary

3. 这头奶牛的乳房非常硕大，每天产奶量很高。

   zhè tóu nǎi​niú de rǔ​fáng fēi​cháng shuò​dà, měi tiān chǎn nǎi liàng hěn gāo.

   The cow's udder is very large, and its daily milk yield is high.

   Source: Dong Chinese Dictionary