Media Selection for advertisements after determining the target audience for a product or service, advertisingagencies must select the appropriate media for the advertisement.
广告媒介的选择广告代理商在确定产品或服务的目标受众后，必须为广告选择合适的媒介。
2
After determining the target audience for a product or service, advertisingagencies must select the appropriate media for the advertisement.
在确定产品或服务的目标受众后，广告公司必须为广告选择合适的媒介。
3
Most advertisingagencies absolutely refuse to accept unsolicited ideas from third parties.