科学家：纯吃素未必更环保 肉类对地球生物至关重要
<p>近年来素食主义倡导者大力宣传素食的环保效应，称吃素食不仅环保，还能拯救地球。然而科学家最近表示，纯素并不能更环保，肉类对地球生物至关重要。</p><p><span word="Meat">Meat</span> <span word="is">is</span> <span word="crucial">crucial</span> <span word="for">for</span> <span word="feeding">feeding</span> <span word="the">the</span> <span word="planet">planet</span>, <span word="leading">leading</span> <span word="scientists">scientists</span> <span word="have">have</span> <span word="said">said</span>, <span word="as">as</span> <span word="they">they</span> <span word="warned">warned</span> <span word="it">it</span> <span word="is">is</span> <span word="not">not</span> <span word="more">more</span> <span word="environmentally">environmentally</span>-<span word="friendly">friendly</span> <span word="to">to</span> <span word="go">go</span> <span word="vegan">vegan</span>.</p><p>知名科学家说，在给地球生物提供食物方面，肉类至关重要。他们警告说，纯素并不会更环保。</p><p><span word="vegan">vegan</span>[ˈ<span word="vi">vi</span>ːɡə<span word="n">n</span>]：<span word="adj">adj</span>.严格的素食主义的</p>
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