circumference
gb/sɚkˈʌmfɹəns/ us/sɚkˈʌmfɹəns/
B2
英语
~ 9200
义项
0 个义项
名词
technical
B2
quantity
1
distance around a circle
The distance all the way around a circle or round object.
用法模式：
the circumference of [something]
常见错误：
Learners often confuse 'circumference' with 'radius', 'diameter', or 'perimeter'. 'Circumference' is the distance around a circle. The radius is the distance from the center to the edge, the diameter is the distance across the circle through the center, and 'perimeter' is the distance around any shape (not just a circle). Another common mistake is to say 'a circumference of the circle is 10 cm'; more natural is 'the circumference of the circle is 10 cm'.
近义词
perimeter (A general word for the distance around any shape, not only circles; often used in everyday contexts more than in strict geometry for circles.)
|
girth (Usually refers to the distance around the body of a person or animal, especially around the waist or chest; more physical and concrete than the mathematical term.)
反义词
diameter (A contrasting measurement that goes straight across a circle through its center, instead of around it.)
搭配
the circumference of a circle
|calculate the circumference
|measure the circumference
|earth's circumference
|waist circumference
主题
math
|science
|geometry
|education
|core_vocabulary
例句
- To find the circumference of the circle, multiply its diameter by π.
- The tree's circumference was over three meters, showing how old it was.
- Engineers need the exact circumference of the wheel to program the speed sensors.
- Doctors often measure waist circumference to check for health risks.
- The earth's circumference at the equator is a little over 40,000 kilometers.
学习者例句
- We learned how to find the circumference of a circle in math class.
- The circumference of this plate is about one meter.
- She measured the circumference of his waist with a tape.
- This machine shows the circumference of each metal ring.
- The circumference of the earth is very large.
名词
C1
entity
2
outer boundary of a round area
The outside edge or line around a round area or round object.
用法模式：
around the circumference of [something]
常见错误：
Learners may think 'circumference' in this sense must always involve numbers or measurement, but it can simply mean the outer line or edge of a round area. In everyday descriptions, 'edge' or 'around the edge' is often more natural, so overusing 'circumference' in casual speech can sound too technical.
近义词
edge (A more general and common word for the outer limit of a surface or area, not limited to round shapes.)
|
border (Emphasizes the dividing line between two areas; not limited to circular shapes and used more broadly in geography and design.)
反义词
center (Refers to the middle point of a space or object, in contrast to its outer boundary.)
搭配
around the circumference
|mark the circumference
|along the circumference
|trace the circumference
主题
space
|geometry
|science
|core_vocabulary
例句
- Lights were placed around the entire circumference of the stadium roof.
- A low stone wall marked the circumference of the old garden.
- Trees had been planted along the circumference of the lake.
- She slowly walked the circumference of the arena, waving to the crowd.
- The fence follows the circumference of the circular field.
学习者例句
- There is a path around the circumference of the pond.
- Benches stand along the circumference of the round park.
- He drew a circle and then colored only its circumference.
- Shops are built around the circumference of the plaza.
- They put lamps around the circumference of the round pool.
语法
词典原形
circumference
IPA
GB/sɚkˈʌmfɹəns/
US/sɚkˈʌmfɹəns/
音节与重音
cir - cum - fer - ence （4 个音节）
Stress on 1st syllable (cir)
词形变化
Noun
- Base: circumference
- Plural: circumferences
词族
Forms
circumferences
noun
Related words
circumferential
adjective
Advanced or less common
circumferentially
adverb
相关表达
这个词条暂未关联相关表达。