This photo can express details because it has a high density of halftone dots.

The railway network in Japan is very developed.

He caught fish in the river using a fish-trap.

I used a scoop made of a wire mesh to catch fish from the pond.

He is using a hand-held net to catch fish in the river.

The government is building a nationwide surveillance network.

We are working on building a new communications network.

He saved money as a safety net before starting his own business.

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

The small fish are swimming in the river.