Humans and nature should coexist together.

I eat fresh vegetables every day.

Silicon dioxide is a major component of glass and ceramics.

Koiso-san is my best friend.

Isonade is a creature from Japanese legend.

An isotope refers to elements with the same atomic number but different numbers of neutrons.

This is my first question.

The success of this project greatly depends on our flexibility.

There is Christmas in December.

There is Halloween in October.