perimeter

简明释义

英[pəˈrɪmɪtə(r)]美[pəˈrɪmɪtər]

n. 外缘，周边；周长；（篮球）外围；视野计

复 数 p e r i m e t e r s

英英释义

单词用法

同义词

反义词

例句

1.For the team patrolling the perimeter the first fifteen minutes passed without incident.

这支队伍在房子周围巡逻着，最初的十五分钟没有任何意外发生。

2.But still left a visible crack around the perimeter of the rectangle.

但这样还是会在矩形的边上留下一点缝隙。

3.By night, the perimeter wire was illumined by lights.

夜晚，周遭的铁丝网都被灯光照亮。

4.Couldn't I just line the perimeter of my yard with something to keep them at bay?

我不可以只用什么东西在我的院子周围画线来隔绝它们吗？

5.In addition, you include elements such as third-party tools and an electronic perimeter.

此外，还可包括第三方工具和电子边界之类的元素。

6.The team set up a perimeter and began sweeping the area clean.

研究小组在此地圈定了一个周长，开始着手清理这块区域。

7.You walk around its perimeter and you don't immediately see a way in.

你绕着它走啊走，无法立即找到进入的途径。

8.Expecting the Perimeter Institute to deliver insights on this scale is clearly a tall order.

期待圆周理论物理研究所提供如此规模的见解显然是一个艰巨的任务。

9.To build a fence, we need to measure the perimeter 周长 of the backyard.

为了建造围栏，我们需要测量后院的周长。

10.The school playground has a large perimeter 周长 that allows for various sports activities.

学校操场的周长很大，可以进行各种体育活动。

11.In mathematics class, we learned how to calculate the perimeter 周长 of different shapes.

在数学课上，我们学习了如何计算不同形状的周长。

12.The perimeter 周长 of the rectangular garden is twice the sum of its length and width.

矩形花园的周长是其长度和宽度之和的两倍。

13.The city is planning to install lights around the perimeter 周长 of the park for safety.

城市计划在公园的周长周围安装灯光以确保安全。

作文

Understanding the concept of perimeter is essential in both mathematics and real-life applications. The perimeter refers to the total length of the boundaries of a two-dimensional shape. For instance, if you take a rectangle, the perimeter can be calculated by adding together the lengths of all four sides. This fundamental concept not only helps us in geometry but also plays a significant role in various fields such as architecture, landscaping, and even in planning sports activities.When we think about the importance of perimeter, we can see its relevance in everyday life. Imagine you are planning to build a fence around your garden. To determine how much fencing material you need, you must first calculate the perimeter of the garden. If your garden is in the shape of a rectangle measuring 10 meters in length and 5 meters in width, the perimeter would be calculated as follows: perimeter = 2 × (length + width) = 2 × (10 + 5) = 30 meters. This simple calculation allows you to purchase the correct amount of materials without waste.Moreover, the concept of perimeter extends beyond simple shapes. In more complex geometrical figures, understanding how to calculate the perimeter becomes crucial. For example, consider a triangle. The perimeter of a triangle is found by adding the lengths of all three sides together. If a triangle has sides measuring 7, 8, and 5 meters, the perimeter would be 7 + 8 + 5 = 20 meters. This knowledge is not only applicable in academic settings but also in practical situations like determining the length of wire needed for a triangular garden bed.In architecture, the perimeter is vital when designing buildings and outdoor spaces. Architects must carefully consider the perimeter of structures to ensure they meet safety regulations and aesthetic standards. A well-designed building with an appropriate perimeter can enhance the overall functionality and appearance of a space. Additionally, when planning parks or recreational areas, city planners must account for the perimeter to create safe and accessible environments for the community.Furthermore, the concept of perimeter is also significant in sports. For example, in a basketball court, the perimeter defines the area where three-point shots are taken. Understanding this perimeter can influence training strategies and game plans. Coaches often analyze players’ shooting percentages from different locations on the court, which directly relates to their understanding of the perimeter.In conclusion, the term perimeter encompasses much more than just a mathematical definition. It represents a critical aspect of our daily lives, influencing everything from gardening and construction to sports and urban planning. By mastering the concept of perimeter, we equip ourselves with the knowledge to make informed decisions in various practical scenarios. Whether you are a student learning geometry or an adult managing projects at home or work, understanding the perimeter is a valuable skill that can lead to better planning and execution of tasks. So next time you encounter a shape, remember that the perimeter holds the key to unlocking its potential and understanding its boundaries.

理解周长的概念在数学和现实生活应用中至关重要。周长指的是二维形状边界的总长度。例如，如果你取一个矩形，可以通过将四条边的长度相加来计算周长。这一基本概念不仅帮助我们在几何学中，也在建筑、园艺甚至体育活动的规划等多个领域发挥着重要作用。当我们思考周长的重要性时，可以看到它在日常生活中的相关性。想象一下，你正在计划在花园周围建一个围栏。为了确定你需要多少围栏材料，首先必须计算花园的周长。如果你的花园是一个长方形，长10米，宽5米，那么周长的计算如下：周长 = 2 × (长度 + 宽度) = 2 × (10 + 5) = 30米。这一简单的计算使你能够购买到合适数量的材料，而不会浪费。此外，周长的概念不仅限于简单的形状。在更复杂的几何图形中，理解如何计算周长变得至关重要。例如，考虑一个三角形。三角形的周长是通过将三条边的长度相加来找到的。如果一个三角形的边长分别是7米、8米和5米，则周长为7 + 8 + 5 = 20米。这一知识不仅适用于学术环境，也适用于实际情况，例如确定制作三角形花坛所需的电线长度。在建筑学中，周长在设计建筑和户外空间时至关重要。建筑师必须仔细考虑结构的周长，以确保其符合安全法规和美学标准。设计良好的建筑物具有适当的周长，可以增强空间的整体功能和外观。此外，在规划公园或娱乐区域时，城市规划者必须考虑周长，以创建安全且可进入的社区环境。此外，周长的概念在体育运动中也很重要。例如，在篮球场上，周长定义了三分球投篮的区域。理解这一周长可以影响训练策略和比赛计划。教练们经常分析球员在场上的不同位置的投篮命中率，这与他们对周长的理解直接相关。总之，周长这一术语不仅仅包含数学定义。它代表了我们日常生活中的一个关键方面，影响着从园艺和建筑到体育和城市规划的方方面面。通过掌握周长的概念，我们为自己装备了在各种实际场景中做出明智决策的知识。无论你是学习几何的学生，还是在家里或工作中管理项目的成年人，理解周长都是一种宝贵的技能，可以带来更好的规划和执行任务。因此，下次当你遇到一个形状时，请记住，周长是解锁其潜力和理解其边界的关键。