yǎn / chū / qián / jì / shù / rén / yuán / zhèng / zài / jiǎn / chá / shí / yīn / qì / hé / yīn / xiǎng / shè / bèi

演出前，技术人员正在检查拾音器和音响设备。

Before the performance, the technicians were checking the pickups and sound equipment.