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Lesson34 Food of the Future?
第34課未來的食物？
Scientists are always trying out new ways of growing food, even though they can only guess what food will be like in the future. Here are some of their imaginations.
科學家即使只能猜測未來的食物是什么樣子， 也還要經常嘗試種植糧食的新方法。下面是一些他們的想象。
The sea can be farmed. Only one third of the earth's area is island. The remainder is sea. The ocean contains huge amounts of tiny sea-animals called Krill. Krill are already in some fish products, such as fish sticks and canned crab. Next time you buy canned or frozen seafood look carefully at the label. You might see krill listed as one of the ingredients. Seaweed is another source of future food from the ocean. It is used in ice cream and some bread.
我們可以從海洋中獲取食物。只有三分之一的地球表面是陸地，其他部分是海洋。海洋里有大量的叫做磷蝦的微小海洋動物。磷蝦已經用于一些魚制品，如凍魚條和罐裝的螃蟹之中。下次你買了罐裝的或冷凍的海產食品時，仔細看看標簽，或許能看到列在食物成分中的磷蝦。海洋中的海藻是未來食物的另一種原料來源。它現在用于冰激凌和一些面包。
Animals can be changed. A farmer is able to "engineer" his animals by adding hormones to their feed. Hormones can make chicken meat more tender or beef less fat. For example, dairy farmers add growth hormones so that calves produce milk sooner than normal.
牲畜可被改變。農夫能在飼料中添加荷爾蒙來“制造”他的牲畜。荷爾蒙能使雞肉更嫩，或使牛肉脂肪變少。比如，奶牛場主添加生長荷爾蒙，能使小牛提前產奶。
New crops can be planted.Today, rice supports more than half the world's population. But it takes a lot of water to grow rice. Scientists predict the climate will get drier during the next century. Therefore, it might be impossible to grow rice in the future.
人們可種植新品種作物。現在，大米供養世界一半多的人口。但是大米生長要許多水。科學家預測下世紀氣候會變得更干燥。因此，未來或許不可能種大米了。
Some farmers are experimenting with new crops. Farmers like to grow beans because they don't need much water, and beans also improve the quality of the soil. The soybean makes a good substitute for rice and meat.
有些農民在實驗新品種作物。他們喜歡種植豆子，因為豆子需水不多，而且還能改善土壤品質。大豆是大米和肉的不錯的替代物。
krill [動]磷蝦
fish stick 凍魚條
hormone 荷爾蒙, 激素
