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1,298 published items.

Why not use cotton swab?
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Why not use cotton swab?

Sweeping the ear with a cotton swab (or other objects) will push the earwax deeper into the inside, causing the eardrum to not vibrate effectively and damage the hearing.

December 18, 2018
Chinese hydroelectric dams slow down the Earth
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Chinese hydroelectric dams slow down the Earth

The Three Gorges Dam in China, which provides clean energy for the pressing needs of the people of this country, also causes many environmental impacts.

December 18, 2018
Interesting history of toilet paper
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Interesting history of toilet paper

People 's baths in the past often depend on their social status and whereabouts. Wealthy people often use soft wool or soft cloth to wash, instead of toilet paper.

December 18, 2018
Principle of operation of wind turbines
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Principle of operation of wind turbines

Wind energy is described as a process, it is used to generate mechanical or electrical energy. Wind turbines will transform from wind dynamics into mechanical energy.

December 18, 2018