There are so many types of myopia glasses. Which one is suitable for your child?

Nowadays, there are many myopia glasses available on the market: ordinary frame glasses, defocus control frame glasses, orthokeratology lenses, multifocal soft corneal contact lenses... What are the differences between them? Which one is better?

The amount of water is nearly 5,000 times that of the Earth's oceans! Where does the water of this "ocean planet" in the universe come from?

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There are so many types of myopia glasses. Which one is suitable for your child?

The amount of water is nearly 5,000 times that of the Earth's oceans! Where does the water of this "ocean planet" in the universe come from?

Chewy Nougat: Full hands-on experience with Android 7.0!

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One-minute science popularization | Searching for the mystery of the sinking of the Titanic, which iceberg was the culprit?

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