34 Life Cycles-Low

Life Cycles Written by Ned Jensen

《生命周期》作者:Ned Jensen

Introduction Living things change. They go through stages called life cycles. Plants and animals both have life cycles. During their lives, they grow and make new living things. These new living things will look like the plant or animal that made them.

生物会变化。 它们会经历生命周期。 植物和动物都有生命周期。 在它们的一生中，它们生长并产生新的生物。 这些新的生物将看起来像制造它们的植物或动物。

Dogs, cats, cows, tigers, and humans are all mammals. They all have the same life cycles. Birds, frogs, and snakes are not mammals. They each have different life cycles. Plants and animals do not have the same life cycles. In this book you will learn about kinds of life cycles.

狗、猫、牛、老虎和人都是哺乳动物。 它们都有相同的生命周期。 鸟、青蛙和蛇都不是哺乳动物。 它们都有不同的生命周期。 植物和动物的生命周期不同。 在这本书中，你将了解各种生命周期。

Human Life Cycle Let's look at your life cycle. You began as a tiny egg. The egg grew inside your mother It became an embryo. You grew until you had arms, legs, a head, and other parts. You began to look like a tiny person. Babies often take nine months to grow before they are born.

让我们看看你的生命周期。 你一开始是一颗小小的鸡蛋。卵子在你母亲体内生长变成了胚胎。 你慢慢长出了胳膊、腿、头和其他器官。 你开始看起来像个小人。 婴儿在出生前通常需要9个月的成长时间。

As a baby, you did not walk or talk. You were called an infant. You stayed in this stage for a couple of years. Then you entered another stage You entered childhood. You will stay in childhood for about ten years. After childhood, you will go through two more stages. The last one is the adult stage of life.

婴儿时期，你不会走路也不会说话。 你被称为婴儿。 你在这个阶段呆了几年。 然后你进入了另一个阶段，你进入了童年。 你将停留在童年大约十年。 童年之后，你会经历另外两个阶段。 最后一个阶段是成年阶段。

The adult stage is your longest stage. You are an adult for the rest of your life. New babies can be made just before and during the adult stage of life. Do You Know? The oldest person was a French woman. She lived 122 years. Word Wise A mother can have more than one baby. 2 babies = twins 3 babies = triplets 4 babies = quadruplets 5 babies = quintuplets

成人阶段是你最长的阶段。 你的余生都是成年人。 新生儿可以在成年前或成年期间出生。 你知道吗?年龄最大的是一位法国妇女。 她活了122岁。一个母亲可以有多个孩子。 2个宝宝=双胞胎3个宝宝=三胞胎4个宝宝=四胞胎5个宝宝=五胞胎