This shape is called a gyrobifastigium.

Tatsumi picked up the wallet and brought it to the police box.

I maintain my health by doing aerobic exercises every day.

In linear algebra, the upper triangular matrix plays a very important role.

San, true to his name, always seems to be shining.

Saint Pierre and Miquelon is an overseas territory of France.

Cell biology is the study of the structure and function of cells, which are the basic units of life.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.

I used an optical microscope for an experiment at school.

I am majoring in auditory phonetics at university.