3 sentences

1. 这套舞台服装设计得非常炫。

   zhè tào wǔ​tái fú​zhuāng shè​jì de fēi​cháng xuàn.

   This stage costume is designed to be very flashy.

   Source: Dong Chinese Dictionary

2. 强烈的阳光炫得人睁不开眼。

   qiáng​liè de yáng​guāng xuàn de rén zhēng bù kāi yǎn.

   The intense sunlight was so dazzling that people couldn't keep their eyes open.

   Source: Dong Chinese Dictionary

3. 他拿着新买的跑车四处乱炫，让人反感。

   tā ná zhe xīn mǎi de pǎo​chē sì​chù luàn xuàn, ràng rén fǎn​gǎn.

   He shows off his newly bought sports car everywhere, which is quite annoying.

   Source: Dong Chinese Dictionary