There are always yakuza-type men surrounding that lady.
Koichi went into a black building, cautious of his surroundings.
I was told that Mt. Fuji’s crater is about three kilometers around and two hundred and thirty-seven meters deep.
The circumference that surrounds us is the perimeter of the area. Do not cross it.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.