发明冰箱以前 人类如何保存食物
<p><span word="Before">Before</span> <span word="Refrigerators">Refrigerators</span> <span word="Were">Were</span> <span word="Invented">Invented</span>, <span word="How">How</span> <span word="Did">Did</span> <span word="People">People</span> <span word="Preserve">Preserve</span> <span word="Their">Their</span> <span word="Food">Food</span> (<span word="Particularly">Particularly</span> <span word="Meat">Meat</span>) <span word="So">So</span> <span word="That">That</span> <span word="It">It</span> <span word="Didn">Didn</span>'<span word="t">t</span> <span word="Spoil">Spoil</span>?</p><p>在发明冰箱以前，人们是如何保存食物不致腐烂（尤其是肉类）？</p><p>获得6.2<span word="k">k</span>好评的回答@<span word="Kian">Kian</span> <span word="Bakhtiari">Bakhtiari</span></p><p><span word="All">All</span> <span word="the">the</span> <span word="answers">answers</span> <span word="have">have</span> <span word="focused">focused</span> <span word="on">on</span> <span word="fairly">fairly</span> <span word="new">new</span> <span word="and">and</span> <span word="recent">recent</span> <span word="systems">systems</span> <span word="of">of</span> <span word="refrigeration">refrigeration</span>.</p><p>所有的回答都把注意力集中在近现代的保鲜系统上。</p><p><span word="But">But</span> <span word="in">in</span> 500 <span word="BCE">BCE</span> – <span word="The">The</span> <span word="yakhchal">yakhchal</span> (<span word="meaning">meaning</span> "<span word="ice">ice</span> <span word="pit">pit</span>" <span word="in">in</span> <span word="Persian">Persian</span>;) <span word="an">an</span> <span word="ancient">ancient</span> <span word="Persian">Persian</span> <span word="type">type</span> <span word="of">of</span> <span word="refrigerator">refrigerator</span> <span word="was">was</span> <span word="invented">invented</span>.</p><p>但是在公元前500年，古老波斯的冰箱-<span word="yakhchal">yakhchal</span>（在波斯语言中意为冰坑）就已经被发明了。</p><p><span word="The">The</span> <span word="structure">structure</span> <span word="was">was</span> <span word="formed">formed</span> <span word="from">from</span> <span word="a">a</span> <span word="mortar">mortar</span> <span word="resistant">resistant</span> <span word="to">to</span> <span word="heat">heat</span> <span word="transmission">transmission</span>, <span word="in">in</span> <span word="the">the</span> <span word="shape">shape</span> <span word="of">of</span> <span word="a">a</span> <span word="dome">dome</span>.</p><p>它是由砂浆构成的，以防止热传递，形状类似于圆顶。</p><p><span word="Snow">Snow</span> <span word="and">and</span> <span word="ice">ice</span> <span word="was">was</span> <span word="stored">stored</span> <span word="beneath">beneath</span> <span word="the">the</span> <span word="ground">ground</span>, <span word="effectively">effectively</span> <span word="allowing">allowing</span> <span word="access">access</span> <span word="to">to</span> <span word="ice">ice</span> <span word="even">even</span> <span word="in">in</span> <span word="hot">hot</span> <span word="months">months</span> <span word="and">and</span> <span word="allowing">allowing</span> <span word="for">for</span> <span word="prolonged">prolonged</span> <span word="food">food</span> <span word="preservation">preservation</span>.</p><p>雪和冰贮藏在地下，能够使冰块在夏季也能够获得，并且有效延长食物保质期。</p><p><span word="In">In</span> <span word="Europe">Europe</span> <span word="and">and</span> <span word="other">other</span> <span word="less">less</span> <span word="developed">developed</span> <span word="nations">nations</span> (<span word="at">at</span> <span word="the">the</span> <span word="time">time</span>) <span word="spices">spices</span> <span word="were">were</span> <span word="used">used</span> <span word="to">to</span> <span word="preserve">preserve</span> <span word="meat">meat</span>. <span word="The">The</span> <span word="most">most</span> <span word="popular">popular</span> <span word="being">being</span> <span word="salt">salt</span> <span word="since">since</span> <span word="pepper">pepper</span> <span word="was">was</span> <span word="still">still</span> <span word="expensive">expensive</span> <span word="and">and</span> <span word="difficult">difficult</span> <span word="to">to</span> <span word="attain">attain</span>.</p><p>在欧洲以及其他少数发达国家（当代）辣椒曾被用于储藏肉类。但是盐会更加的通用，因为辣椒较贵而且不易获得。</p>
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