relativityKK [ˌrɛləˈtɪvəti] ｜ /ˌrɛləˈtɪvəti/
GEPT 中高級
C2noun
(physics) the theory that space and time are relative concepts rather than absolute concepts
In the theory of relativity, the concept of time dilation suggests that time can slow down or speed up depending on the observer's relative motion.
（物理）相對論
C2noun
the quality of being relative and having significance only in relation to something else
The concept of relativity becomes evident when comparing the size of objects in space. For instance, the moon may seem massive when viewed from Earth, but when compared to other celestial bodies like Jupiter or the sun, its relativity in terms of size becomes apparent.
相對性；相對關係