He is an expert in systems engineering.

My major is chemical engineering.

My major is mechanical engineering.

Astronautics is a field of study related to the exploration of space and the design of spacecraft.

She had a beauty like that of a peony.

We played a match on the artificial turf soccer field.

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The problem of finding the least common multiple is one of the basic problems in mathematics.

They learned about the least common multiple in math class.

He thought deeply about the result of that juristic act.