To encircle something or someone means to surround or enclose them, or to go round them.
例句
A forty-foot-high concrete wall encircles the jail...監獄周圍有一圈40英尺高的混凝土墻。By 22nd November the Sixth Army was encircled.到11月22日，第六軍被包圍了。
英漢詞典釋義
vt.
包圍;環繞
A band of gray hair encircled his bald dome.他的禿頭頂四周長著一圈灰白的頭發。Strong fingers encircled her tiny wrists.強有力的手指箍著她那細小的手腕。The army encircled the airport.軍隊包圍了機場。We should encircle the enemy forces completely and let none escape from the net.我們應該四面包圍敵人不使一人漏網。
英英詞典釋義
Verb
1. be around;
"Developments surround the town""The river encircles the village"