She was told by the doctor that it is difficult to get pregnant due to a problem with her fallopian tubes.

He always proactively suggests new ideas.

He likes to take a walk in the park at dusk.

I maintain my health by doing aerobic exercises every day.

This diode only allows current to flow in one direction.

The vas deferens is a part of the male reproductive system and has the role of transporting sperm.

This old radio uses a vacuum fluorescent display.

This old radio uses a pentode.

This old radio uses a cold-cathode tube.

Inside the ear, there are semicircular canals to maintain balance.