to oppose each other with equal harshness; to be sharply pitted against one another in opinion, strategy, or action; tit for tat

theory of relativity; relativistic physics. Developed by Albert Einstein in the early 20th century, it changed the understanding of space, time, and gravity, forming the basis of modern physics. It includes both [[狭义相对论|狹義相對論|xia2 yi4 xiang1 dui4 lun4]] and [[广义相对论|廣義相對論|guang3 yi4 xiang1 dui4 lun4]].

relatively speaking; comparatively; viewed from an alternative or opposite perspective

the state or quality of being relative; refers to things that exist in relation to or in opposition to one another

To look at each other from a distance; to face one another across a great space.

To face each other without a word to say; to sit or stand together in silence.

relating to or involving the theory of relativity in physics

(computing) a memory or file location defined by its distance from a reference point

(literary) to weep together in the face of disaster; to face one another in a desperate situation without any ideas or solutions; based on a story from the Jin dynasty of refugees from the north gathering at a pavilion and weeping for their lost homeland until they were scolded for not taking action

in a relative or comparative manner

the amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature

In Marxist philosophy, an incomplete and approximate reflection of the objective world at a certain stage of development, containing elements of absolute truth

To meet a possible marriage partner or go on a blind date.

relative altitude or height measured from a specific point or local ground level rather than sea level

to meet each other's gaze; of two people, to look directly into each other's eyes

non-relativistic, particularly when used in the context of physics

Einstein's theory of gravity, describing the gravitational force as a curvature of space and time

The special theory of relativity, proposed by Einstein, which deals with the relationship between space and time in the absence of gravity.

(of old friends) to spread brushwood on the ground as a mat to sit and talk; to meet and chat with an old friend, often with great courtesy and hospitality

(philosophy) the doctrine that knowledge, truth, and morality exist in relation to culture, society, or historical context, and are not absolute

The price of one good or service in terms of another; the ratio of two prices.

The location of something in relation to other objects or a specific reference point

relative density; the ratio of the density of a substance to the density of a standard reference material

relative number or value, often expressed as a ratio or percentage in contrast to an absolute value

Used to compare one thing to another or to a general standard