Such 'complaints must go through the proper channels.

这种意见应当通过适当渠道反映。

youdao

It's no use asking me for promotion, you'll have to go through the proper channels.

你向我要求提升无用，你必须通过正常渠道。

youdao

It's no use asking me for promotion, you'll have to go through the proper channels.

你向我要求提升无用，你必须通过正常渠道。

youdao