Charlotte Self, archive manager for the project said she and her team were asking landowners to donate them where possible, so people around the route could enjoy them.
"This is a new scientific field. It's hard to speculate because it's changing so quickly," Wing says.
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And as for their noise-cancelling features, Mangino says "The ANC on this pair of headphones is just right, too. It isn't the best I've ever experienced, which isn't entirely surprising since the ear cups aren't particularly snug; that's great for comfort, but less effective for passive noise cancellation. But I find that its ANC easily blocks out the noise of busy city streets and the clink and clatter of my local coffee shop."，详情可参考旺商聊官方下载
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