He was born as an illegitimate child and experienced many difficulties.

He holds a personal grudge against me.

Using the private railway makes commuting very convenient.

Before starting a new business, he evaluated all the risks as if he were crossing a stone bridge by tapping on it, meaning he was very careful.

The doctor examined my perineum.

Sea turtles play an important role in the marine ecosystem.

This sea urchin is fresh and delicious.

This restaurant offers fresh seafood.

The Bohai Sea is one of the important sea areas of China.

I always relax at the beach on weekends.