The signal from the cell phone relay-station in this area is weak.

The mobile phone communication is unstable because the base station in this area is broken.

His only weakness is sweets.

He is weak, so he tends to get sick easily.

In my area, a summer festival is held every year.

Are you holding my mobile phone?

I always carry a water bottle with me.

He works at a naval base.

I think he is completely crazy.

I mailed a letter at the post office.