2 sentences

1. 他在晚会上表演了一段充满节奏感的口技。

   tā zài wǎn​huì shàng biǎo​yǎn le yī duàn chōng​mǎn jié​zòu​gǎn de kǒu​jì.

   He performed a rhythmic beatboxing act at the party.

   Source: Dong Chinese Dictionary

2. 这位老艺人的口技表演模仿得惟妙惟肖，令观众啧啧称奇。

   zhè wèi lǎo​yì​rén de kǒu​jì biǎo​yǎn mó​fǎng de wéi​miào​wéi​xiào, lìng guān​zhòng zé​zé​chēng​qí.

   The veteran artist's vocal mimicry was so lifelike that it amazed the audience.

   Source: Dong Chinese Dictionary