He introduced the new product in several test markets.

他在几次试卖会中介绍新产品。

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They introduced the new product in several test markets.

他们在试卖会中提倡新产品。

youdao

Dunkin' Donuts plans to test new mobile technologies in select markets in the next two weeks that will allow shops to send customized offers to customers.

WSJ: New Technology to Lure Shoppers

Lower start-up costs and less strict worker protection make it easier for innovative entrepreneurs in America to experiment on a small scale (hence the smaller size of new firms), to test the markets and to expand.

ECONOMIST: Economics focus

The stock was one of the first new batch of Chinese e-commerce sites to test the IPO markets last year, making its debut in November.

FORBES: Mecox Lane Is A Bargain Here