1、一定要外籍的

2、请试所有文段并做好后期（降噪去除口水音）

3、浑厚，温和，中快的语速

4、必须有专业录音设备

5、试音文档如下：

Upstream type steam locomotive, also known as upstream type small steam locomotive for industrial and mining use, was jointly designed by Dalian factory and Tangshan factory in 1959 and had been named as industrial and agricultural type. This locomotive is 21,643mm in length, constructed speed 80km per hour, modal tractive force 204kN, axle type 1-4-1. Overall weight 140t, maximum height: 4446mm, maximum width 3300mm, coal and water car loading 9.5t, coal and water car loading 25㎡. The upstream type of the whole steam locomotive exterior as well as the control room has been renovated, the whole car parts are complete and the structure is intact.