focus group
noun /ˈfəʊkəs ɡruːp/
/ˈfəʊkəs ɡruːp/
[countable + singular or plural verb]- a small group of people, specially chosen to represent different social classes, etc., who are asked to discuss and give their opinions about a particular subject. The information obtained is used by people doing market research, for example about new products or for a political party.
焦点小组（选自各阶层，讨论某专项问题；所得信息常为市场调查人员或某政党所用） Collocations DictionaryFocus group is used before these nouns:- participant