balance of power noun
Learner's definition of BALANCE OF POWER
[singular]
: a state or situation in which two countries or groups (such as two political parties) have equal amounts of power(国家或政党间的)均势—
usually used with the通常与the连用 ◊ A group that holds the balance of power is able to control what happens by choosing to support either one of two larger groups that oppose each other.有举足轻重的地位