The duct design of this building is very complex.

Sharo-san is my best friend.

This airway is very congested.

It's really tough to get through this bad road.

Walking my route to school every day is my daily routine.

Michio is my best friend.

I think he is a true person on the road.

Urinary tract infection is a disease where part or all of the urinary tract is infected by bacteria.

I am saving up for the expenses needed for the trip.

The airplane went to the runway through the taxiway.