Monsoon 季风 If it rains a lot in one season, the area may be influenced by monsoons. 如果一个季节下很多雨,那么该地区可能受季风的影响。 A monsoon is a seasonal wind which brings heavy rain. 季风是一种季节性的风,它

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Triangle Trade 三角贸易 Imagine that you have plenty of milk but no bread, 想象一下,你有很多牛奶却没有面包, you know that your sister had some bread but she doesn't drink milk, 你知道你妹妹有面包,但她不喝牛奶,

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Cylinder 圆柱体 If you have two circles and one rectangle, what can you do with them? 如果你有两个圆和一个矩形,你能用它们做什么? You can make a cylinder. 你可以做一个圆柱体。 A cylinder has two circular shapes on

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Slum 贫民窟 People say that one billion people in the world are living in slums. 人们说世界上有10亿人住在贫民窟里. What are slums? 什么是贫民窟? A slum is a dirty, dangerous area of the city. 贫民窟是城市中肮脏、危险

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Marie Curie 玛丽居里 Many scientists in history have changed our lives a lot. 历史上许多科学家改变了我们的生活. Were there only male scientists? 只有男性科学家吗? Of course not, there have been many female scientists. 当然

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Geologists 地质学家 Geology is a very interesting field of science. 地质学是一个非常有趣的科学领域. People who study geology are called geologists. 研究地质学的人被称为地质学家. Geologists explore the Earth. 地质学家

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Crocodile 鳄鱼 When most dinosaurs disappeared eighty million years ago, some kinds of animal survived. 当大多数恐龙在8000万年前灭绝时,一些动物幸存了下来。 Crocodiles were one of them. 鳄鱼是其中之一。 People believ

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Osmosis 渗透作用 When you water plants or flowers, do you pour water on their leaves? 你给植物或花浇水时,会把水倒在它们的叶子上吗? No, you don't. You may pour water on the ground. 不,你不会。你可能把水倒在地上

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El Nino 厄尔尼诺 Do you know who the worst child in the world is? It is El Nino. 你知道世界上最坏的孩子是谁吗?是厄尔尼诺。 El Nino means the little boy in Spanish. 厄尔尼诺在西班牙语中的意思是圣婴。 Is El Ni

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Mutation 突变 Do you know about mutations? 你知道突变吗? A mutation happens when the DNA structure in a gene changes. 当基因的DNA结构发生变化时就会发生突变。 Once a mutation happens, the change can't be reversed. 突变一旦

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Calcium 钙 Calcium is a kind of mineral. 钙是一种矿物. It is found in rocks, sea water and soil. 它常见于岩石、海水和土壤中。 Calcium is important for human health. 钙对人体健康很重要。 Then do we have to eat rocks or s

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Acid 酸 Why does the lemon taste sour? 为什么柠檬的味道很酸? It is because of the acid in a lemon. 因为柠檬里有酸。 Then what is acid? 那么什么是酸? All substances with a sour taste are kinds of acid. 所有带酸味的物质

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Mercury 水星 Which planet is the closest to the sun in the solar system? 太阳系中哪颗行星离太阳最近? It is Mercury. It is also the smallest planet in the solar system. 水星。它也是太阳系中最小的行星。 How small is Mer

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Orbit 轨道 Do you know what an orbit is? 你知道什么是轨道吗? An orbit is the path of a planet when it moves around the sun. 轨道是行星围绕太阳运动的轨迹。 It is similar to a cycling track. 它类似于自行车赛道。 As

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Volunteer 志愿者 After hurricane Katrina hit New Orleans, 在卡特里娜飓风袭击新奥尔良之后, thousands of volunteers visited the city to help victims of the hurricane. 数千名志愿者前往该市帮助飓风的受灾者。 Volunte

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Communism 共产主义 If everyone is equal and everyone has the same amount of money, will everybody feel happy? 如果每个人都是平等的,每个人都有同样多的钱,那么每个人都会感到快乐吗? Communists believe so. 共产主

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Boycott 联合抵制 Do you know what a boycott is? 你知道什么是抵制吗? A boycott means that people don't buy certain products. 抵制意味着人们不买某些产品。 Sometimes people boycott products because they believe that the comp

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Bazaar 集市 Do you know what a bazaar is? 你知道什么是集市吗? It is a kind of market place in the Middle East and India. 它是中东和印度的一种市场。 There are many small shops and people buy things at those shops. 有许多小商

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Cost 成本 In our society, everything has its cost. 在我们的社会里,一切都是有成本的. What is the cost? 什么是成本? A cost is something you have to give up in order to get another thing. 成本是你为了得到另一件东西而

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Harbor 港口 When people don't use their cars, they keep the cars in garages or parking lots. 人们不使用汽车时,会把车放在车库或停车场里。 Then where do people keep their ships? 那么人们把船放在哪里呢? A harbor is

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