on campus
表示“在校内”时，campus 前一般不加冠词，常与 live、stay、work 等动词连用。
Most first-year students live on campus.
大多数一年级学生住在校内。
大学（及其氛围）；大学环境；学校、大学、企业、教堂或医院的场地或财产,包括建筑物和其他结构；高等教育机构及其氛围
the grounds and buildings of a school, college, university, or other institution such as a business, church, or hospital
校区常用于分校区，园区常用于企业或科技园区，院区常用于医院区
学校、大学、企业、教堂或医院的场地或财产,包括建筑物和其他结构
The grounds or property of a school, college, university, business, church, or hospital, often understood to include buildings and other structures.
校园
a field on which the buildings of a university are situated
高等教育机构及其氛围
An institution of higher education and its ambiance.
The new library is in the center of the campus, next to the main building.
新图书馆在校园中心，紧挨着主楼。
用法提示：campus 是名词，指校园、校区。
Students often ride bikes across campus to get to their morning classes.
学生们常常骑自行车穿过校园去上早晨的课。
用法提示：这里 campus 作为名词，表示校园的场地范围。
Our university has two campuses; the science campus is on the east side of town.
我们大学有两个校区；理学院校区在城东。
用法提示：复数形式 campuses 表示多个校区。
表示“在校内”时，campus 前一般不加冠词，常与 live、stay、work 等动词连用。
Most first-year students live on campus.
大多数一年级学生住在校内。
off campus 表示“在校外”，同样不加冠词，多与 live、move、rent 等搭配。
She moved off campus after her second year.
大二之后她搬到了校外住。
特指某一所学校的校园时，可用 on the campus of 加学校名，此时要加 the。
The new library stands on the campus of Peking University.
新图书馆位于北京大学的校园内。
campus 可直接放在名词前作定语，表示“校园的”，如 campus life、campus activities。
Many students take part in campus activities.
许多学生参加校园活动。
grammar · medium
易错句子Many students live in campus.
正确表达Many students live on campus.
表示“在校园内”时，英语固定用介词 on，不用 in。汉语“在校园里”的“里”容易误导学习者；on campus 是固定搭配。
grammar · medium
易错句子There are three campus in our city.
正确表达There are three campuses in our city.
campus 是可数名词，复数形式为 campuses（以 -s 结尾加 -es），不能用单数 campus 表示多个。three 后必须用复数 campuses。
grammar · medium
易错句子I joined many campuses activities last week.
正确表达I joined many campus activities last week.
名词作定语修饰另一个名词时，通常用单数形式，因此“校园活动”是 campus activities，不用复数 campuses。汉语名词没有数的变化，学习者容易误加复数。
在校园内；在校内
Most first-year students are required to live on campus.
大多数一年级学生被要求住校。
在校外
Students are allowed to park off campus.
学生可以在校外停车。
校园生活
Campus life at the university is vibrant.
这所大学的校园生活丰富多彩。
校园参观；校园导览
Prospective students can take a campus tour.
有意报考的学生可以参加校园参观。
主校区
The main campus is located in the city center.
主校区位于市中心。
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校园安保；校园安保部门
If you see anything suspicious, call campus security.
如果发现任何可疑情况，请拨打校园安保电话。