1、A four-sided plane figure with four right angles
矩形，長方形具有四個邊的方形，有四個直角

2、A four-sided plane figure with opposite sides parallel
平行四邊形一種有四條邊且每兩條邊對應(yīng)平行的平面圖形

3、Stylish and four-sided protection design.
時髦的外觀及四面保護設(shè)計。

4、For instance, mandating a four-sided fence around a pool can decrease risk of drowning.
例如，強制規(guī)定水池加裝圍欄可以減少溺水的危險。

5、You can easily draw four-sided polygons in Processing with quad.
在Processing內(nèi)使用quad可以很容易地繪制有四個邊的多邊形。

6、The Amstelhof, a severely handsome, four-sided brick building enclosing a large garden, is huge.
Amstelhof是一個簡潔出眾，4面體，中間有一個大花園的巨大砌體建筑。