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The smooth sensation of nitrogen bubbles is exactly what makes Guinness Draught and La Colombe draft lattes so irresistible. It's less the prickly feeling of effervescence than the sheer silk on your tongue, as the bubbles create a whole new texture in the drink. 吉尼斯黑啤酒和La Colombe（咖啡厅）的纯拿铁如此有吸引力，是因为氮气气泡有光滑感。它没有气泡产生的刺痛感，而是让舌间感觉丝滑，因为饮料中的这些气泡质地不一般。 Now, America's most popular beer brand, Budweiser, will begin infusing its own beer with nitrogen. 现在美国最受欢迎的啤酒品牌百威要在啤酒中加入氮气。 | 
