While a tail might seem like a simple feature, it plays an important role in the lives of many animals. For example, we can often tell when a dog is excited by the way it wags its tail. Small moments like these show that tails are active parts of animals’ bodies. These movements can offer clues about what the animal is thinking or planning to do. Across the animal world, tails come in many shapes and sizes because they serve different purposes.
雖然尾巴或許看起來像個簡單的特徵，它卻在許多動物的生活中扮演著重要的角色。例如，我們常常能透過狗狗搖尾巴的方式來判斷牠是否興奮。像這種細微的瞬間表明，尾巴是動物身體中活躍的部位。這些動作可以提供關於動物的想法或計畫的線索。在動物世界中，尾巴有許多形狀和大小，因為它們各有不同的作用。
生活必備字詞：
clue n. 線索
come in... 有……（的形狀、尺寸等）
serve a purpose 起某種作用
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本文節錄自《常春藤生活英語》雜誌，完整內容請見五月號。
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