首页 > 字母 P > Perimeter
Perimeter
[ pə'rɪmɪtɚ ]
其它 Other
n. <数>周长;周围,边界;
💡 词根助记
peri周围,靠近+meter测量→测量一圈→周边
📝 例句
Drinks in hands, they wandered around the perimeter of the ball field.
他们手里拿着饮料在球场周围漫不经心地遛跶。
The barbed wire fence round the perimeter discouraged intruders.
周围有铁丝网阻止了外人闯入.
Guards had been posted at several points around the perimeter.
在环形防线上已布置了几处岗哨.
The circle has greater area than a regular polygon of the same perimeter.
正的面积比同样周长的正多边形的面积大。
How am I to find the perimeter in the dark?
我在黑暗里怎么看出周围的警戒线呢?
🌱 联想助记
【记】※ peri-前缀“周围”,meter-米:圆周边的米数即周长
※ per-每一,i-似“蜡烛”,meter-米:每一根蜡烛的周长有一米
📖 牛津释义
perimeter
n
1 (length of the) outer edge of a closed geometric shape 周; 周边; 边缘; 周长.
2 boundary of an area 周围的界限
Guards patrolled the perimeter of the airfield. 卫兵沿机场四周巡逻.
[attrib 作定语]
the perimeter fence 周围的篱笆. Cf 参看 circumference.
🔁 扩展释义
*[pә'rimitә]n. 周长, 周界, 边缘【医】 周, 周边, 周界线; 周长; 视野计
🌿 同词根单词
period
n. 时期;(一段)时间;学时;句号;
adj. 具有某个时代特征的;(关于)过去某一特定历史时期的;(家具、服饰、建筑等)某一时代的;
🗣️ 情景例句
He explained that he had tried to fix the air-line to the supply line that ran round the port but could not because the fittings did not match.
他解释说他想供气管安装到铺设在码头周围的供应管上,但因为接头不相配而接不上。
更多情景英语 ›