One part is important.

In order to find the least common denominator, you need to find the multiples of all denominators.

We conducted a spectral analysis to investigate the spectral characteristics of this substance.

He was researching old records at the public records office.

The Koizumi syntax, often seen on the internet, is becoming a topic of discussion.

I used a microscope for a biology experiment.

Please turn on the TV.

My son has started learning taekwondo.

I have to go to the hospital for a urinalysis tomorrow.

The doctor recommended me to carry out a urinalysis.