3 sentences

1. 那场杂技表演十分惊险。

   nà chǎng zá​jì biǎo​yǎn shí​fēn jīng​xiǎn.

   That acrobatic performance was very thrilling.

   Source: Dong Chinese Dictionary

2. 杂技团在晚会上表演了许多惊险的绝技。

   zá​jì​tuán zài wǎn​huì shàng biǎo​yǎn le xǔ​duō jīng​xiǎn de jué​jì.

   The acrobatic troupe performed many thrilling stunts at the gala.

   Source: Dong Chinese Dictionary

3. 那次事故的惊险场面经常在他的梦中再现。

   nà cì shì​gù de jīng​xiǎn chǎng​miàn jīng​cháng zài tā de mèng zhōng zài​xiàn.

   The thrilling scenes of that accident often recur in his dreams.

   Source: Dong Chinese Dictionary