3 sentences

1. 医生切除了他身上的良性瘤。

   yī​shēng qiē​chú le tā shēn shàng de liáng​xìng liú.

   The doctor removed a benign tumor from him.

   Source: Dong Chinese Dictionary

2. 医生告诉他，检查结果显示那个肿块是良性的。

   yī​shēng gào​su tā, jiǎn​chá jié​guǒ xiǎn​shì nà​gè zhǒng​kuài shì liáng​xìng de.

   The doctor told him that the test results showed the lump was benign.

   Source: Dong Chinese Dictionary

3. 建立良性循环对企业的发展至关重要。

   jiàn​lì liáng​xìng xún​huán duì qǐ​yè de fā​zhǎn zhì​guān​zhòng​yào.

   Establishing a virtuous cycle is crucial to a company's development.

   Source: Dong Chinese Dictionary