He is an expert in chemical analysis.

This cell divides to create new cells.

He is using an octant for navigation.

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

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

He strongly believes in the value of humanism.

Sextans is one of the constellations in the southern sky.

I love the class of reading Chinese classics in Japanese.

I studied Classical Chinese in university.

He is known as an expert in psychoanalysis.