因此，职业、昵称、家乡和父亲的名字就用来当作姓氏——例如，富勒特彻和史密夫，利德·希特和斯福特，格林和皮克灵，威肯斯和约翰逊。

So trades, nicknames, places of origin, and fathers' names became fixed surnames - names such as Fletcher and Smith, Redhead and Swift, Green and Pickering, Wilkins and Johnson.

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这样能使能量消耗比使用三氟化氮时更少，而且没有促进全球变暖的危险，皮尔格林说。

That takes less energy than splitting nitrogen fluoride and there is no global warming risk, Pilgrim says.

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“太阳能板容量每增加一兆瓦，就需要一吨的三氟化氮来清洗设备。”皮尔格林说。

"For every megawatt of solar panel capacity, you'll need a ton of NF3 for cleaning the equipment," Pilgrim says.

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