Verbs of the lower second conjugation are important for understanding Japanese grammar.

In learning Japanese grammar, understanding the upper two-step conjugation is important.

When learning Japanese grammar, it is important to understand verbs of the upper monograde conjugation.

Pterygota is a part of insects, characterized by having wings.

Being prepared for an earthquake is exactly what it means to be prepared against adverse events.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.