B: Could I have this sample free of charge?

b：这样品可以免费送我吗？

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During commercials, an overlay will appear at the bottom of the screen, prompting viewers to press a button to request a free sample or order a catalogue.

在商业广告播放时，一个弹窗将会出现在屏幕下方，促使观众按动按钮，以索要免费样品或订阅产品目录。

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Just prior to launching a new product, the company sent the blogger a free sample, inviting him to review it with no strings attached.

于是公司就在发布一个新产品之前，发送给该博客作者一个免费的样品，不附带特别条件地邀请他评测该产品。

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We are vulnerable to placebos: "Hey -- I took the 30-day free sample and I feel sure my vision did improve!"

CNN: Herbal remedies need real scrutiny

Type in your demographic information and you'll see a screen listing your free-sample options -- everything from cleaning products to Harlequin romance novels to toiletries.

CNN: 23 surprising things you can get for free