4 sentences

1. 这次会议来了数十名代表。

   zhè cì huì​yì lái le shù​shí míng dài​biǎo.

   Dozens of delegates attended the meeting.

   Source: Dong Chinese Dictionary

2. 这家企业集团拥有数十家子公司。

   zhè jiā qǐ​yè​jí​tuán yōng​yǒu shù​shí jiā zǐ​gōng​sī.

   This business group owns dozens of subsidiaries.

   Source: Dong Chinese Dictionary

3. 他非常珍视这段跨越了数十年的真挚友谊。

   tā fēi​cháng zhēn shì zhè duàn kuà​yuè le shù​shí nián de zhēn​zhì yǒu​yì.

   He deeply treasures this sincere friendship that has spanned several decades.

   Source: Dong Chinese Dictionary

4. 这件古董在经过数十轮竞价后，最终以高价成交。

   zhè jiàn gǔ​dǒng zài jīng​guò shù​shí lún jìng​jià hòu, zuì​zhōng yǐ gāo​jià chéng​jiāo.

   After dozens of rounds of bidding, this antique was finally sold at a high price.

   Source: Dong Chinese Dictionary