boundedness

n. 局限性(限度)

例句与用法：

He bounded into the room and announced that he was getting married.

他蹦蹦跳跳地跑进房间里，宣布他要结婚了。

The airfield is bounded by woods on all sides.

飞机场的四周都是树林。

Germany is bounded on the west by France and on the south by Switzerland.

德国西面与法国接壤，南与瑞士为邻。

The dog bounded down the hill.

狗跳跃着朝山下跑去。