英语单词pretest是什么意思？

pretest: [ 'pri:test ]

n. 预备考试,预备调查
v. 进行预备考试

<用法例句>：
To subject to or conduct a pretest.
预先测试参加或主持预先测试

pretest1
KK: []
DJ: []
n.
1. 预备考试;预备调查
pretest2
KK: []
DJ: []
vt.vi.
1. 进行预备考试

n. - 预备考试, 预备调查
v. tr. - 进行预备考试
v. intr. - 预先测试

Testing of copy, design, marketing strategies, research methodology, or any other element of a campaign before launching. Pretesting is performed to determine which execution of a campaign is most productive and/or if the chosen research design is optimal.

For example, an advertiser may pretest consumer reactions to a new product by displaying point-of-purchase samples in selected store locations, before a national campaign is launched. Pretesting is commonly used for methods of gathering data, since questionnaires, interviewer instructions, and interviewers' capabilities are frequently prone to subjective interpret