He measured the wavelength of light using interferometry.

This law is a sieve law, full of loopholes.

He really looked like a wizard.

I am planning to go to Gangwon in Korea next week.

He has no knowledge about anal sex.

He started training his anal sphincter.

He is majoring in syntax at university.

He is an expert in enzymology and conducts many researches.

The population density of this area is very high.

This scent comes from benzoin.