单词	cap-and-trade
释义	cap-and-tradeˌcap-and-ˈtrade noun [uncountable] a system in which companies are only allowed to produce a limited amount of substances that harm the environment. If they produce more than the amount allowed, they have to buy permission from other companies that produce less.
随便看	whir whirl whirligig whirlpool whirlwind whirr whisk whisk broom whisker whisky whisper whispering campaign whist whistle whistle-blower whistle-blowing Whistler, James McNeill whistle-stop Whit whit Whitaker's Almanack white whitebait white blood cell whiteboard

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