"perimeter" in Chinese (Simplified)

• 周长
• 周边范围

Definition

perimeter 指一个区域或图形的外边缘或边界。在数学中，它是一个二维图形一周的总长度。

Usage Notes (Chinese (Simplified))

这个词在数学里很常见，常搭配 'calculate the perimeter' 和 'find the perimeter'。不要和 'area' 混淆，'area' 表示内部面积。除了数学，它也可指安保或警方控制的外围区域。

Examples

We need to measure the perimeter of the garden.

我们需要测量花园的**周长**。

What is the perimeter of this rectangle?

这个长方形的**周长**是多少？

Security guards were posted around the perimeter of the building.

安保人员部署在大楼**周边范围**。

The police quickly secured the perimeter after the alarm went off.

警报响起后，警方迅速封锁了**周边范围**。

The fence goes around the perimeter of the school.

围栏沿着学校的**周边**建着。

I checked the perimeter twice to make sure all the gates were locked.

我检查了**周边范围**两次，确保所有大门都锁好了。