英語知識小品分享(編輯修改稿)
2025-04-14 03:00 本頁面
【文章內(nèi)容簡介】 t on it，but this preserved only the outside．Later they may have pickled their meat by soaking it in salt water． In hot，dry lands，men found that they could eat meat that had dried while it was still on the bones．They later learned to cut meat into thin strips and hang it up to dry in the hot air． Men in cold climates found that frozen meat did not spoil．They could leave their meat outside and eat it when they pleased． 人類儲存肉的三種方法 對原始人類來說，獲得充足的肉是件難事，而把肉類儲存到缺肉的時令也同樣不容易。人們找到了防止肉類變腐的三種辦法：鹽腌、風(fēng)干和冷凍。 靠近咸水地帶的居民用鹽腌肉。起先，他們可能是把干鹽擦在肉上，但這只能使肉的外部不腐。后來，他們也許就改用咸水浸泡的辦法來腌肉了。 在炎熱、干燥的地方，人們發(fā)現(xiàn)他們可以食用已經(jīng)變干、但仍連在骨骼上的肉。后來，他們學(xué)會把肉切成薄條，懸掛起來，讓它在炎熱的空氣中變干。 生活在寒冷氣候下的人們則發(fā)現(xiàn)凍肉不腐。他們可以把肉置于室外，高興時隨時可吃。 『英語知識小品：幫助改良土壤的蚯蚓』 Earthworms that Help Improve the Soil The earthworm is a useful animal．Out of the ground，it is food for other animals．In the ground，it makes rich soil for fields and gardens． Earthworms dig tunnels that loosen the soil and make it easy for air and water to reach the roots of plants．These tunnels help keep the soil well drained． Earthworms drag dead leaves，grass，and flowers into their burrows．When this plant material decays，it makes the soil more fertile． No other animal is so use
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