circumforaneous

例句：

1. 1.The city is surrounded by mountains and rivers.
   这个城市被山脉和河流环绕。
2. 2.The moon is encompassed by a thin layer of clouds.
   月亮被一层薄云环绕。
3. 3. The room was surrounded by bookshelves.
   房间周围摆满了书架。