1The surroundings or environs around a place, object, or person; the area or people nearby.
周囲の人々に相談してみよう。
Let's try consulting the people around us.
建物の周囲にフェンスを設置した。
They installed a fence around the building.
彼は周囲の期待に応えようと頑張った。
He worked hard to live up to the expectations of those around him.
登山中、周囲の景色がとてもきれいだった。
During the climb, the surrounding scenery was very beautiful.
2The circumference of a circle or object's outer edge, or the length of that boundary — used in mathematical or measurement contexts.
木の周囲に花を植えた。
We planted flowers around the trunk of the tree.
円の周囲の長さを計算する問題を解いた。
I solved a problem computing the circumference of a circle.
公園の周囲を一周走った。
I ran once around the park.