考研英语水平的进步，不仅要记单词，还需要阅读外语文献等资料。接下来，小编为2024考研者们，整理出——2024考研英语同源外刊:香蕉指数登场，供考生参考。
2024考研英语同源外刊:香蕉指数登场
Eating a juicy steak is worse for the environment than frying up some tofu: that much should come as no surprise. Going vegan can dramatically cut the carbon footprint of your diet. But what about the fewer calories, and lower levels of protein, found in most plant-based foods when compared with meat? That makes it hard to compare emissions of meals that are equally nutritious. To make the relative carbon impact of foods easier to digest, The Economist proposes a banana index. It compares popular foodstuffs on three metrics—weight, calories and protein—indexed to the humble banana, a fruit of middling climate impact and nutritional value.
吃多汁的牛排比炸豆腐对环境的危害更大：这一点应该不足为奇。吃素可以极大地减少你饮食中的碳足迹。但是，与肉类相比，大多数植物性食物的卡路里和蛋白质含量更低，这又如何呢?这让人很难比较营养价值相同的不同食物的排放情况。为了让食物的“相对碳影响”更直观易理解，《经济学人》提出了一个香蕉指数。香蕉对气候的影响和它的营养价值都较为适中，用三个指标——重量、卡路里和蛋白质——将常见的食物与不起眼的香蕉挂钩比较。
Indexing greenhouse-gas emissions to a single food gives a sense of how different foodstuffs rank. Unfortunately for carnivores, beef is bad for the environment no matter how you slice it. Producing one kilogram of mince causes as many emissions as 109kg of bananas (call it a “banana score” of 109). Adjust for nutritional value, and beef’s banana score falls to 54 (one calorie of beef mince causes 54 times as much carbon emissions as one calorie of banana). By protein, it scores seven.
将温室气体排放与单一食物挂钩可以让人们了解不同食物的排放等级。食肉族要遗憾了：无论你怎么切，牛肉都对环境无益。生产一公斤牛肉末产生的碳排放相当于生产109公斤香蕉(即 “香蕉分”为109分)。调整为按营养价值计，牛肉的香蕉分降至54分(生产1卡路里牛肉末产生的碳排放量是生产1卡路里香蕉的54倍)。按蛋白质计算，牛肉末的香蕉分是7分。
Poultry scores 11 bananas by weight and four by calorie. However, as a source of protein, it is more carbon-friendly than bananas: poultry protein emits just three-fifths of the same amount of banana protein. The same applies to salmon. Unsurprisingly, plant-based alternatives to meat do even better: a meat-free burger, for instance, scores just one-fifth of the emissions of bananas per gram of protein.
家禽按重量计算时香蕉分为11分，按卡路里计为4分。不过，作为一种蛋白质来源，它比香蕉更环保：蛋白质含量相同时，家禽的排放仅为香蕉的五分之三。三文鱼也一样。不出所料，植物基肉类替代品还更环保，例如，一个纯素汉堡每克蛋白质的排放仅为香蕉的五分之一。
单词
index/ˈɪndeks/ n. 指数;指标;
climate impact 气候影响;
juicy/ˈdʒuːsi/ adj. 多汁的，汁液丰富的;
steak/steɪk/ n. 肉排，(尤指)牛排;
fry/fraɪ/ vi. 油炸;油煎;油炒;
tofu/ˈtoʊfuː/ n. 豆腐;
come as no surprise 不足为奇，意料之中;
vegan/ˈviːɡən/ adj. 严格素食的，不吃肉的;
dramatically/drəˈmætɪkli/ adv. 明显地;
carbon footprint 碳足迹;碳排放量;
plant-based/plænt beɪst/ adj. 植物性的;
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