channel /'tʃæn(ə)l/ n. 途径；渠道；系统:

击收听音频跟读 ↓↓↓ ↓↓↓ ↓↓↓

例句/词组:

Complaints must be made through the proper channels.

投诉必须通过正当途径进行。

英语解释：

a method or system that people use to get information, to communicate, or to send sth somewhere 途径；渠道；系统: