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Chemistry in life
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It's actually a kind of visual illusion.
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Paper cups can also take off! Although it can't fly very far.
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You can't wash the dishes without surfactant? Until then, the first thing you need to worry about is how to save your life.
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Look for any more in your piggy bank.
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A Christmas calendar worth seeing in December ~
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A pleasant and patient activity
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Why is the bear swollen? A safe and interesting home experiment ~
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At the moment, I am busy packing up the broken noodles.
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Red and green, both sides of chlorophyll