All About Snakes

All About Snakes. Written by Ned Jensen. Focus question. What is a snake?

《关于蛇的一切》，作者：内德·延森。聚焦问题：蛇是什么？

Introduction. Some people do not like snakes. They may think snakes are gross or dangerous. Some can be dangerous. Snakes can also be beautiful and amazing.

引言。 有些人不喜欢蛇， 他们可能觉得蛇既恶心又危险。 有些蛇确实很危险， 但蛇也可以很漂亮、很神奇哦。

Where do snakes live? Many snakes live on land. Some snakes live in or near bodies of water. Snakes cannot live where it is cold all year long. Snakes do not live on some islands.

蛇住在哪里呢？ 很多蛇生活在陆地上， 还有些蛇生活在水域里或者水域附近。 蛇没法在全年寒冷的地方生存， 还有一些岛屿上也没有蛇的踪迹。

Snake traits. Snakes are reptiles. All reptiles are cold -blooded and have a backbone. The body temperature of cold -blooded animals changes with their surroundings. They control their body temperature by moving to warmer or cooler places.

蛇的特征。 蛇是爬行动物， 所有爬行动物都是冷血动物，并且都长有脊椎。 冷血动物的体温会随着周围环境的温度变化而变化。 它们会通过移动到更暖和或者更凉快的地方来调节自己的体温。

Snakes that live in places with cold winters hibernate. They go underground or beneath things where the temperature stays the same. The snakes do not move until the temperature warms again. Snakes that live where it is warm all year do not hibernate.

生活在冬天寒冷地区的蛇会冬眠。 它们会钻到地下或者其他温度恒定的物体下面。 在气温再次回暖之前，这些蛇都会一动也不动。 生活在全年温暖地区的蛇是不需要冬眠的。

Snakes do not have legs, and their bodies are covered with scales. They move by pushing their bodies against a surface. The scales help grip the surface.

蛇没有腿， 它们的身体上覆盖着一片片鳞片。 它们靠身体抵着接触面借力来移动。 鳞片能帮助它们抓紧接触面。