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With digital software like Photoshop being used ever so often to alter things so perfectly, it’s hard to tell what’s real anymore. Take these photos of the so-called ‘rainbow grapes’ that have been doing the rounds online for about a month. They’re about the coolest-looking fruit I’ve ever seen, but are they real? 随着PS软件的流行，人们P出来的图片也越来越完美，有时候真的很难分辨我们看到的图片中哪些是真哪些是假。就以近一个月来在网上流传的彩虹葡萄为例，这些葡萄的颜色可以说是我所见到过的色彩最丰富的水果了，可是它们是真的吗？ Well, yes and no. Rainbow grapes do exist, but they are just regular grapes photographed in a ripening stage known as Veraison, or the ‘onset of ripening’. “When grapes go into the final stage of ripening, the young immature grapes have a very dark, opaque green color and a very hard texture, like little rocks,” said Larry Stone, master sommelier and restaurateur. “And then when they go through veraison, the skin goes through coloration. If they’re white grapes, they go from a dark green to a kind of yellowish green color, and they get more and more transparent. A red grape will go from a green color to a red color. The shade of red depends on the variety of grape.” 实际上，彩虹葡萄是真实存在的，只不过它们是普通葡萄在转色期时的样子罢了。转色期就是葡萄浆果快要熟了，开始变色了。侍酒师和餐馆管理者拉里说：“当葡萄进入成熟期的最后一个阶段时，尚未成熟的葡萄会呈现出不透明的深绿色，此时它的肉质很老，就像小石头一样。当葡萄处于转色期的时候，它们的表皮会经历各种颜色的变化。如果它们是白葡萄，它们就会从深绿色变成某种淡黄绿色，并且会变得越来越透明。而红色的葡萄则会从绿色变成红色。其红色的深浅取决于葡萄的种类。” | 
