學英語，英國B-B-C的經驗是，“為什麼不用學母語的方式學英語呢？”大家學母語都是先學說後認字的吧？聽說應該先于閱讀才對。
B-B-C的慢速英語收集整理了很多生活話題，它從身邊事物入手，引導大家循序漸進學習，側重于聽力練習，讓你不知不覺學會英語。
北極燕鷗是一種特别的鳥。遷徙時，它們從北極圈飛往南極圈，再飛回起點，整個旅程非比尋常，曆時一年之久。這種鳥的遷徙路線在全球鳥類中屬最長，但它們在途中也會停下來歇歇腳。北極燕鷗在英國北部繁殖，以北大西洋中部的魚類為食，為漫長的旅程積攢體力。本期節目介紹這種鳥漫長而艱苦的遷徙之旅。
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單詞表
先聽一遍，肯定有生詞，不要緊，看看下面的單詞表。
⇒tracking device 跟蹤裝置
⇒Arctic tern 北極燕鷗
⇒migration 遷徙
⇒Arctic Circle 北極圈
⇒Antarctic Circle 南極圈
⇒route 路線
⇒Northern hemisphere 北半球
⇒breeding 繁殖
⇒southward 向南地
⇒continent 大陸
⇒feeding ground 覓食地
⇒flight path 飛行路線
⇒wind system 風系
⇒round-trip 往返旅程
⇒lay 産（蛋）
⇒nest 鳥窩，鳥巢
⇒incubation 孵化
⇒hatch （雛鳥）孵出，破殼而出
⇒chick 雛鳥
⇒stop off 中途停留
⇒zooplankton 浮遊動物
⇒beak （鳥）嘴，喙。
看英文原稿
學習了生詞，回過頭再聽幾遍，争取每句話都聽懂，沒聽出來的對照下面的英文原稿。
Back in 2010, an international research team fitted tracking devices to birds they believed to be special – Arctic terns. And it turns out they were right, as described in US journal, PNAS. The Arctic tern has an extraordinary year-long migration from the Arctic Circle to the Antarctic Circle and back again.
What does this route look like? Arctic terns begin their migration in the Northern hemisphere in the summer, which is breeding season. As it gets colder and darker, turning to winter, the birds fly southward, parallel to the coast of South America or hugging the coast of the African continent to reach their winter feeding ground, the Antarctic Circle. And they do not always fly in a straight line. While heading back up north, their flight path mimics an S-shape which they follow to save energy while navigating the wind systems in the different hemispheres. This journey is a round-trip of up to 35,000km long, which makes the Arctic tern's migration the longest of any bird. Plus, they see more daylight than any other animal on Earth!
But, on this epic journey, the birds do take some well-deserved breaks. Heading northward, the population stops on the north and west coast of the UK to breed. A female lays one to three eggs in a nest, and after an incubation period of around three weeks, they hatch, and fluffy brown and grey chicks emerge. Meanwhile, the adult birds feed in the shallow coastal waters on fish, such as sand-eels. In contrast, while heading south, the birds appear to stop off in the middle of the North Atlantic Ocean, where they indulge on fish and zooplankton, preparing themselves for their long journey ahead.
So, if you ever see a little black and white bird with red legs and a red beak, show them some appreciation. They have flown a long way to see you!
本系列由小留洋•Jennifer負責，想聽什麼告訴我們，歡迎一起學習一起研究。➥ 關注「小留洋」，擷取更多海外K12教育資料。