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主题:为什么我们会打喷嚏?


时长:约 2-3 分钟
角色:
  • 尔文(主持人,聪明、有点调皮的少年科学家)
  • 达达(伙伴、助手,一只爱凑热闹的小狗)
场景:
  • 实验室房间

场次一:达达打喷嚏的疑问


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【开场镜头】 –尔文拿着放大镜在看地球仪。
 
旁白:
“你好呀,欢迎来到《尔文奇妙实验室》”
Hello! Welcome to "Ervin's Wonderful Lab".

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达达(在门外打了个喷嚏)
尔文(被吓一跳,看了一下门)
“阿——嚏!!!”
 

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达达(进门,又打了一个喷嚏)。
 
 

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尔文看着达达。
 
尔文:“达达!你没事吧?刚刚那个喷嚏吓我一跳!”
Dada! Are you okay? That sneeze just now really startled me!

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达达疑惑
 
达达:“我不知道啊,我的鼻子一痒,就打喷嚏!”
I don't know. Whenever my nose itches, I sneeze!

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尔文(微笑)
 
“嘿,这正好是我们今天的主题——为什么我们会打喷嚏?”
This is exactly our topic for today - why do we sneeze?

场次二:解释问题


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尔文和达达站在木板前,尔文将图画贴在木板上。
尔文:打喷嚏,其实是身体的一种防御动作!
Sneezing is actually a defensive action of the body!

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尔文近景讲解
当鼻子里进了灰尘、花粉、或者冷空气时,鼻子就会响起警报!”
When dust, pollen or cold air gets into the nose, the nose will sound an alarm!

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达达提问
 
“所以是鼻子在报警吗?”
“So is it the nose that's giving the larm?”

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尔文回答
 
“没错!鼻子在对大脑说:‘快!有异物入侵!”
"That's right! The nose is Shouting to the brain: Quick! Foreign objects have invaded! ”

场次三:动画讲解


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  • 鼻毛像小卫兵,在鼻腔中巡逻
 
 

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  • 灰尘“怪物”闯入
 
 

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  • 鼻毛士卫兵阻挡,并发出信号
 
 

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  • 大脑发出“启动喷嚏”的命令
 

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  • 灰尘被“嗖~”地喷出去
 
 

旁白
“鼻腔里面有很多细小的毛毛,它们像是守卫。当灰尘或花粉入侵时,它们会阻挡灰尘。如果太多或刺激性太强,大脑就会执行打喷嚏指令!”
There are many tiny hairs in the nasal cavity, which look like guards. When dust or pollen invades, they will block the dust. When there is too much and the stimulation is too strong, the brain will execute the sneezing command!

场次四:趣味实验


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尔文讲解
 
“打喷嚏能帮助我们把灰尘和细菌赶出去,是身体保护自己的方式。”
Sneezing can help us drive away dust and bacteria and is a way for the body to protect itself.

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达达
“原来喷嚏是身体的‘清洁工’呀!”
“It turns out that sneezing is the body's cleaner!”

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尔文说完,拿出羽毛,看着达达
 
还有,如果鼻子刺激太强时也会打喷嚏,比如,我这里有一根羽毛。
Also, when the nasal irritation is too strong, one may sneeze. For instance, I have a feather here.

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达达紧张的看着尔文
 
“尔文,你想干什么?”
What do you want to do, Evan?

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尔文表情露出一点坏笑~
“我想…来做个实验…”
“I think... Let's do an experiment...”

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尔文把羽毛伸到达达鼻子前
 

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尔文将羽毛塞到达达的鼻子里,达达打出一个打喷嚏,
 
 

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羽毛喷到地上
达达(画外音):“好强的气流!”

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尔文讲解
“这就是喷嚏的威力。
This is the power of a sneeze.

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尔文讲解
 
喷嚏的气流速度最强时可比汽车还快!”
The airflow speed of a sneeze can be even faster than that of a car at its strongest!

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尔文讲解
 
“如果你要打喷嚏,一定要挡住嘴巴和鼻子,这样就不会把细菌喷到别人身上啦!”
Kids, if you want to sneeze, make sure to cover your mouth and nose. This way, you won't spray bacteria onto others!

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达达接着尔文说
“如果用手挡着,那就要马上洗手“
If you cover it with your hands, you must wash your hands immediately.!

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没错!达达,我们一定要注意卫生哦!”
Yes! Dada, we must pay attention to hygiene!

场次五:总结收尾


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尔文躺在地板上,阳光洒在身上,尔文总结内容
“今天我们了解了打喷嚏是鼻子在清理灰尘,是身体的保护动作“
Today we learned that sneezing is the nose cleaning up dust and it is a protective action of the body.

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达达点头,然后又皱眉让尔文“不要用我做实验”
 
嗯,下次打喷嚏我就不担心啦”,但是下次不要拿我来做实验啦!
Well, I'm not worried about the next sneeze. But don't use me for experiments next time!

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尔文(躺在地板上大笑)
 
 

【片尾 logo】


🔬科普要点

  • 鼻腔有绒毛,能过滤灰尘。
  • 打喷嚏是神经反射:鼻腔受刺激 → 信号传到大脑 → 肺部瞬间喷出空气。
  • 一次喷嚏的气流速度可达 160km/h。
  • 打喷嚏时要遮掩口鼻,保持卫生。
 
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