of or pertaining to or characteristic of elementary school or elementary education; "the elementary grades"; "elementary teachers"
easy and not involved or complicated; "an elementary problem in statistics"; "elementary, my dear Watson"; "a simple game"; "found an uncomplicated solution to the problem" 同义词:simple, uncomplicated, unproblematic,
of or being the essential or basic part; "an elementary need for love and nurturing" 同义词:elemental, primary,
百科解释
In computational complexity theory, the complexity class ELEMENTARY of elementary recursive functions is the union of the classes in the exponential hierarchy.