She was hiding the sadness concealed within her smile.

He will succeed sooner or later.

The cherry blossoms in the park are still half in bloom.

He twisted the paper to make a straw.

He is an expert in electronics.

Molybdenum is an important element in the production of steel.

Electromagnetism is a part of physics that studies the interaction between electricity and magnetism.

I commute by train every day.

This computer is using the latest technology.

He sent me important information by telegram.