Ryuichi is my best friend.

The source of this river is at the top of the mountain.

Ryusuke is my best friend.

The muddy stream hit the town.

A lot of driftwood was washed up on the beach.

In this experiment, we will observe the behavior of α particles.

The train suddenly stopped.

The bus stopped in front of the station.

The liquidity of this company is very high.

He drifted all night at sea.