The train service is delayed today.

The train has started operating.

This airline operates more than 200 flights every day.

This airline operates flights from Tokyo to New York every day.

He was plowing and weeding in the rice field all day.

He was plowing and weeding the rice field all day.

He grew up in poverty when he was young.

People from all over the country gathered to celebrate the emperor's birth.

You can use spectroscopy to examine the components of a substance.

Yo was digging soil in the garden.