We practice natural farming without using chemical fertilizers.

Mr. Chyo drew a beautiful picture of a butterfly.

Japan's exclusive economic zone plays a crucial role in the management and utilization of marine resources.

He is playing the character of Bun.

Protein-degrading enzymes play a role in breaking down unnecessary proteins in the body.

This compound has a tetrahedral molecular geometry.

The Riemann sum is a method for approximately calculating the integral of a function.

The Koizumi Shinjiro structure brought a new wind to Japanese politics.

This problem is difficult.

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