This old radio uses a tetrode.

This old radio uses a pentode.

The Arctic Tern, also known as 極鯵刺, can be seen in the Arctic region.

The arctic tern is known for its long-distance flights.

He always acts considering right and wrong.

He composed a beautiful requiem for his father.

The semispinalis capitis muscle is a part of the neck muscles, helping to tilt the head backwards.

He often takes things out of context, leading people to misunderstand.

He chose to discard the shadow for the substance.

For the sake of friendship, he chose to cut off his own interests and take righteousness.