perimeter助记

perimeter

[pəˈrɪmɪtə(r)]

n.<数>周长;周围，边界;

复数： perimeters

例句:

1、

a perimeter fence/track/wall

围绕四周的栅栏 / 小径 / 墙

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2、

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 ?

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3、

Rule two : you stay clear of the perimeter fence at all times.

第二:离周围的篱笆远一点.

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