perimeter相关的词根或词缀是: metermetrmeasmens

The number of services to destinations outside the perimeter will increase by two-thirds .

周边以外的服务目的地数量将增加三分之二。

Senator john mccain of arizona introduced an unsuccessful bill to repeal the perimeter rule in 2009 .

亚利桑那州参议员约翰麦凯恩于2009年曾提出一项法案，试图废除周边规则，但未获成功。

Costumes from the movies are on display along the outside perimeter .

大厅的周围展出的是电影里用过的服装。

The dust was especially thick along the western perimeter of the desert .

在沙漠西部边缘地带，尘土特别厚。

Now , we just modify the function by saying that we want the ones where the perimeter is 24 .

最后，修改函数，告诉它只要周长为24的三角形。