加州科学分级 · 加州科学Time For Kids G1

13 Dolphins

Dolphins by Liane B. Onish Table of Contents What Does a Baby Dolphin Do? page 2 How Do Dolphins Get Along? page 6 How Do Dolphins Live? page 12 Glossary/ Index page 15 Comprehension Check page 16

海豚作者:Liane B. Onish 海豚如何相处? 海豚如何生活? 词汇表/索引第15页理解检查第16页

What Does a Baby Dolphin Do? Dolphins are animals. Dolphins live in the ocean. A baby dolphin is called a calf. A dolphin calf has to learn to swim. The calf learns to go to the surface, or top of the water, to get air, too. calf Dolphins need air one or two times a minute.

小海豚会做什么? 海豚是动物。海豚生活在海洋里。 小海豚被称为小海豚。 小海豚必须学会游泳。 小海豚也学会了游到水面或水面上呼吸空气。 海豚每分钟需要呼吸一到两次空气。

A dolphin calf is three feet long when it is born. The calf weighs about thirty pounds. A dolphin calf grows quickly. The calf will grow up to be eight or twelve feet long and weigh 1,000 pounds. The calf drinks milk for a year. At five months, it can eat fish, too. Calf 3 feet Adult 8 feet Language DETECTIVE Clue: A period (.) comes at the end of a sentence. Find another kind of punctuation on page 2. Dolphins stay close to other dolphins. Dolphins are social animals. Dolphins like being in groups together. Some calves live with their parents and grandparents.

海豚幼崽出生时有三英尺长。 牛犊重约30磅。 小海豚长得很快。 幼崽会长到8到12英尺长,重达1000磅。 小牛喝奶喝了一年。 五个月大时,它也能吃鱼了。 小牛3英尺成人8英尺语言侦探线索:句点(.)出现在句子的末尾。 在第二页找到另一种标点符号。 海豚和其他海豚靠得很近。 海豚是群居动物。 海豚喜欢成群结队。 一些小牛犊和他们的父母和祖父母住在一起。

How Do Dolphins Get Along? Baby dolphins are playful. Baby dolphins play catch with bits of seaweed. Baby dolphins ride across waves. seaweed: a plant in the ocean Dolphins like to play together. A dolphin mother keeps an eye on her calf. When the dolphin mother hunts for food, other dolphins take care of the calf. These dolphins are called aunts. Like animal cubs, dolphin calves stay close together. keeps an eye on: watches over Dolphins nap near the surface in order to breathe.

海豚是如何相处的? 海豚宝宝很爱玩。 小海豚用海草碎片玩接球游戏。 小海豚乘风破浪。 海豚喜欢在一起玩耍。 海豚妈妈在照看她的小海豚。 当海豚妈妈寻找食物时,其他海豚会照顾小海豚。 这些海豚被称为“阿姨”。 和动物幼崽一样,海豚幼崽靠得很近。 监视:监视海豚在水面附近打盹以便呼吸。

Every dolphin makes a whistling sound. The sound says, "It's me! I'm here!" Sound waves help dolphins get around and stay safe. Dolphins make a sound. The sound waves hit an object and bounce back to the dolphin. This echo tells what and where the thing is. Using sound waves to find an object is called echolocation. How Echolocation Works clicks echo Dolphins hunt for fish. Dolphins use echolocation to find food in the wild. What Dolphins Eat fish squid shrimp

每只海豚都发出口哨的声音。 声音在说:“是我!我在这里!”声波帮助海豚四处走动并保持安全。 海豚发出声音。声波击中一个物体并反弹回海豚。 回声告诉我们物体的位置和内容。 利用声波来寻找物体被称为回声定位。 回声定位原理海豚捕食鱼。 海豚利用回声定位在野外寻找食物。 海豚吃什么鱼鱿鱼虾

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