You can use a spectrometer to examine the composition of a substance.

Spectroscopy is an important means of investigating the properties of matter.

Demography is a branch of social science that studies the structure, distribution, and changes in human population.

My cat sitting in a catloaf pose is very cute.

He is an excellent high school student.

This POP advertisement has a very noticeable design.

My child goes to a private school.

Japan's heavy industry is famous worldwide.

This Korean ginseng is said to be good for health.

Mr. Konomi is my best friend.