closeness
noun [ U ] uk/ˈkləʊs.nəs/ us/ˈkloʊs.nəs/
(NEAR)
C1 （时间或空间上）接近，邻近
being close in position or time
(RELATIONSHIP)
C1 亲密，熟悉的关系
the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together
A special closeness is supposed to exist between twins. 人们认为双胞胎之间存在着特殊的亲密关系。
(LACKING AIR)
封闭;密不透风
the quality of weather or air conditions in which it is difficult to breathe and is uncomfortably warm