perimeter background

perimeter

/pəˈɹɪmɪtə(ɹ)/

Illustration perimeter - Image 1

Illustration perimeter - Image 2

noun

周长，周边。

The sum of the distance of all the lengths of the sides of an object.

Examples :

"The perimeter of the rectangular garden is 20 meters. "

这个长方形花园的周长是20米。

Illustration perimeter - Image 1

Illustration perimeter - Image 2

noun

周长，周边。

The length of such a boundary.

Examples :

"The perimeter of the garden is 20 meters. "

花园的周长是20米。

Illustration perimeter - Image 1

Illustration perimeter - Image 2

noun

周界，周边，外围。

The outer limits of an area.

Examples :

"The security guard walked the perimeter of the building every hour. "

保安每小时都会沿着大楼的周界巡逻。

Illustration perimeter - Image 1

noun

警戒线, 周边防线

A fortified strip or boundary usually protecting a military position.

Examples :

"The soldiers patrolled the perimeter of the base, ensuring no one could get close undetected. "

士兵们在基地的警戒线上来回巡逻，确保没有人能偷偷靠近。

military war position

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noun

视野计

An instrument for determining the extent and shape of the field of vision.

Examples :

"The optometrist used the perimeter to check the extent of Sarah's field of vision. "

验光师用视野计检查了萨拉的视野范围。

medicine physiology device