...hiệu ứng con quay cho phép nó đứng thẳng và quay trong thời gian dài.
### 5 hashtag ###
* #SpinningTop
* #GyRoscopiceffect
* #THĂNG BẰNG
* #inertia
* #Toys
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## The Circular Structure of a Spinning Top Helps It Balance ##
A spinning top is a toy that...
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