I like talking with my friends in private calls.

His loud vocalization echoed throughout the room.

He sometimes has pain in his crotch when he rides a bicycle.

He is a person who follows his own path, and the phrase 'a big fish does not swim into a small stream' fits him perfectly.

His blood congealed with fear.

He was able to achieve career success and fame after much hardship.

I gargle every night before going to bed.

The International System of Units is a system of units commonly used worldwide.

In order to solve this quantum mechanics problem, we need to find the eigenfunction.

He is interested in learning the international auxiliary language.