People say:Pig is fat.
and pig eats a lot.
In fact, it's not like that.
Pig is really smart.
Pig can clears mines.
This can save lives.
How?
It has a good nose.
It can detect the smell of mine.
This is useful.
So, people learn from the pigs and that's how gas mask is made
You see, nature can teach us.
livvv_
猪猪🐷
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有文本太好了，对着文本一起听，和孩子一起学英语，哈哈
