齿轮如何工作 · How Do Gears Work?
齿轮如何工作
How Do Gears Work?
👁 8 次浏览 · views
探索科学奥秘——齿轮是边缘有齿的轮子！
Explore science — How Do Gears Work?!
📖 趣味知识 / Fun Fact
chǐ齿lún轮shì是biān边yuán缘yǒu有chǐ齿de的lún轮zi子。dāng当liǎng两gè个chǐ齿lún轮niè啮hé合zài在yī一qǐ起shí时，yī一gè个zhuǎn转dòng动jiù就huì会dài带dòng动lìng另yī一gè个fǎn反xiàng向zhuǎn转dòng动。tōng通guò过xuǎn选zé择bù不tóng同dà大xiǎo小de的chǐ齿lún轮zǔ组hé合，wǒ我men们kě可yǐ以gǎi改biàn变zhuǎn转dòng动de的sù速dù度hé和lì力liàng量。zhōng钟biǎo表、zì自xíng行chē车hé和qì汽chē车de的biàn变sù速qì器lǐ里dōu都yǒu有chǐ齿lún轮！
Gears are toothed wheels that mesh together. One turning drives another, changing speed and direction — in clocks and bikes! Science is all around us — ask questions whenever you notice something new. Sharing this with family helps kids connect classroom learning to daily life. Curious minds notice these details everywhere once they know what to look for.
🤔 Why?
为什么齿轮如何工作这么有趣？
Why is How Do Gears Work? interesting?
当两个齿轮啮合在一起时，一个转动就会带动另一个反向转动。
One turning drives another, changing speed and direction — in clocks and bikes!.
👧 Compare With You
你的日常生活和“齿轮如何工作”有什么联系？ How does How Gears Work connect to your daily life?
- ✔ 每天呼吸和吃饭 Breathe and eat every day
- ✔ 在学校做实验 Do experiments at school
- ✔ 用眼睛观察世界 Observe the world with your eyes
- ✔ 帮助理解机器 Helps explain machines
- ✔ 齿轮是边缘有齿的轮子，啮合在一起时一个转动会带动另一个， Gears are toothed wheels that mesh together
- ✔ 是齿轮如何工作的核心知识 Core idea of How Gears Work
📚 Vocabulary
💬 Learn Sentences
chǐ齿lún轮shì是biān边yuán缘yǒu有chǐ齿de的lún轮zi子。
Gears are toothed wheels that mesh together.
dāng当liǎng两gè个chǐ齿lún轮niè啮hé合zài在yī一qǐ起shí时，yī一gè个zhuǎn转dòng动jiù就huì会dài带dòng动lìng另yī一gè个fǎn反xiàng向zhuǎn转dòng动。
One turning drives another, changing speed and direction — in clocks and bikes!.
🎤 口语练习 / Speaking Practice
请跟着读： Repeat after me:
dāng当liǎng两gè个chǐ齿lún轮niè啮hé合zài在yī一qǐ起shí时，yī一gè个zhuǎn转dòng动jiù就huì会dài带dòng动lìng另yī一gè个fǎn反xiàng向zhuǎn转dòng动。
One turning drives another, changing speed and direction — in clocks and bikes!.
🎯 Fun Challenge
Multiple Choice两个齿轮啮合在一起转动时会发生什么？
What happens when two meshed gears turn together?
💡 想一想刚才读到的内容。 Think about what you just read.
答对了！两个齿轮啮合时，一个转动就会带动另一个反向转动，还能改变速度和力量。 Correct! When two gears mesh, one turning drives the other in the opposite direction, changing speed and force.
💭 Think About It
如果齿轮如何工作不存在，我们的生活会怎样？
How would life be different without How Gears Work?
哇！ Wow!
zhōng钟biǎo表、zì自xíng行chē车hé和qì汽chē车de的biàn变sù速qì器lǐ里dōu都yǒu有chǐ齿lún轮。
Curious minds notice these details everywhere once they know what to look for.
📊 学习数据 / Stats
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