3 sentences

1. 他把校友会的徽章别在西服领口上。

   tā bǎ xiào​yǒu​huì de huī​zhāng bié zài xī​fú lǐng​kǒu shàng.

   He pinned the alumni association badge to the lapel of his suit.

   Source: Dong Chinese Dictionary

2. 他今天特意穿了一套深蓝色的西服去面试。

   tā jīn​tiān tè​yì chuān le yī tào shēn​lán​sè de xī​fú qù miàn​shì.

   He specifically wore a dark blue suit to the interview today.

   Source: Dong Chinese Dictionary

3. 那个时代，能够买得起西服的人非常少。

   nà gè shí​dài, néng​gòu mǎi​de​qǐ xī​fú de rén fēi​cháng shǎo.

   In those days, very few people could afford a suit.

   Source: Dong Chinese Dictionary