punctuated equilibrium

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It has been argued that this anticipated the punctuated equilibrium hypothesis, but other scholars have preferred to emphasise Darwin's commitment to gradualism.
有人认为这加快了间断平衡假说的发展，但其他学者倾向于强调这表明了达尔文对渐进论的信奉。
dict.cn
This motif matches the general pattern of evolution found in earthly fossils, a pattern known in the evolutionary trade as punctuated equilibrium, or "punk eek" for short.
这个模式与从早期化石里发现的进化的常见模式相契合，该模式在进化论业界里叫做间断平衡（punctuated equilibrium）［7］，或简称为“蹦移（punk eek）”。
Ttip the punctuated equilibrium of market economics in their favor.
以自己的方式确定市场经济的准确平衡。

Mr Gould's opponents referred to punctuated-equilibrium theory as evolution by jerks.
ECONOMIST: Stephen Jay Gould
Though punctuated-equilibrium theory as originally conceived has made few converts, the role of accidents in evolution is more widely appreciated, as asteroid collisions and nearby supernovae are recognised as hazards that can wipe out whole groups of organisms arbitrarily.
ECONOMIST: Stephen Jay Gould
Those who worked with what was alive in an infinity of yesterdays complained that even though they had no good explanation of why punctuated-equilibrium theory worked, you couldn't argue with the evidence in the rocks, maths or no maths.
ECONOMIST: Stephen Jay Gould

a theory of evolution that claims that change happens suddenly over short periods of time followed by long periods of no change