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

It's difficult to understand the principles of electrooptics.

The house over there is very big.

This shape is called a muoctahedron, in other words, a hexagonal four-piece square hole twisted polyhedron.

Protein-degrading enzymes play a role in breaking down unnecessary proteins in the body.

Demography is an important tool for understanding various aspects of society.

I used an optical microscope for an experiment at school.

I mainly use public transportation facilities for commuting.

He had a throat problem, and it was found that his posterior cricoarytenoid muscle was not functioning properly.

He wrote his name using the character for 'work'.