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Trial balloon
01
试验气球, 测试气球
a balloon sent up to test air currents
1.1
试探性措施, 公众意见测试
a thing that is done or introduced in order to test the public's opinion
Example
The company sent out a trial balloon by leaking a rumor about a new product to test customer interest before investing in its development.
The politician floated a trial balloon by mentioning a potential tax increase in a speech to see how the public would respond.
