Japan was forced to open the country to foreigners in 1853 due to the arrival of Commodore Perry.

Real analysis is a branch of mathematics that studies the properties of real numbers and the functions on them.

She is thinking of learning the technique of shell-based craftsmanship.

I read the minutes of yesterday's meeting.

He is doing special exercises to strengthen his pronator.

He is doing special exercises to strengthen his supinator.

He was told by the doctor that supination of his wrist is difficult.

There is always a wall existing between him and me.

A deep friendship exists between him and me.

When summer vacation comes, I go to the sea every day wearing swim trunks.