teaser ad

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˈteaser ad noun [countable]  an advertisement that is used to make people interested in a product, but that does not give very much information about the product, so that people will pay attention to more advertisements later 前导广告，预热广告〔引起人们对产品的兴趣，但不会给予过多信息的广告，以此吸引人们注意其后推出的更多广告〕From Longman Business Dictionaryteaser adˈteaser adMARKETING an advertisement that is used to get the public interested by giving very little information about the product. The purpose is to get attention for the full ADVERTISING CAMPAIGN that follows → ad

ˈteaser ad nounChineseSyllable  

Business people that used interested advertisement to an make is

teaser ad
ˈteaser ad noun [countable]
an advertisement that is used to make people interested in a product, but that does not give very much information about the product, so that people will pay attention to more advertisements later