noun🔗Share周长，周边。 The sum of the distance of all the lengths of the sides of an object."To build a fence around the garden, we need to measure the perimeters of each section to know how much wood to buy. "为了在花园周围建造围栏，我们需要测量每个区域的周长，才能知道要买多少木材。mathareaChat with AIVocabulary GamePractice Reading
noun🔗Share周长，周边。 The length of such a boundary."The farmers measured the perimeters of their fields to know how much fencing to buy. "农民测量了他们田地的周长，以便知道该买多少栅栏。mathareaChat with AIVocabulary GamePractice Reading
noun🔗Share周界， 边界 The outer limits of an area."The soldiers patrolled the perimeters of the base to ensure no one could sneak in. "士兵们在基地的周界巡逻，以确保没有人能偷偷潜入。areamathpropertyChat with AIVocabulary GamePractice Reading
noun🔗Share周界，防线。 A fortified strip or boundary usually protecting a military position."The soldiers patrolled the perimeters of the base, guarding against enemy attack. "士兵们在基地的周界防线上巡逻，以防敌人袭击。militarywarpositionChat with AIVocabulary GamePractice Reading
noun🔗Share视野计 An instrument for determining the extent and shape of the field of vision."The eye doctor used perimeters to test how far my side vision extended. "眼科医生用视野计来测试我的余光能看到多远。medicinedeviceChat with AIVocabulary GamePractice Reading
