1.
Interrupting an opera on television for a pet-food commercial is going from the sublime to the ridiculous.
在电视播演歌剧时插播宠物食品广告真是煞风景。
2.
Commercial television is an effective medium for advertising.
商业电视是有效的广告宣传工具。
3.
Is commercial correspondence taught at the school?
学校里是否教授商业函件?
4.
It is a cable or, to be more exact, a commercial cable.
