He faced many difficulties before he succeeded, but as they say, the road to happiness is strewn with setbacks.

Watashi lives in Japan.

This species of bird has a polygynous breeding pattern.

She has polycystic ovary syndrome.

The multi-armed bandit problem is a part of probability theory, providing an algorithm for making optimal choices.

He turned thirty years old.

This picture is fixed to the frame.

This plant needs oxygen to perform photosynthesis.

In this story, Zuan is the protagonist, and his adventure continues.

The sourness of this lemon is very strong.