Then, in a relative blink, this equilibrium is punctuated by a rapid burst of roiling change with many newcomers and eclipsing of the old.For a short period change is rampant.

• 在相对暂短的一瞬，因许多新老物种的更迭爆发的搅局打破了这种平衡，因为，短暂的变化是无法控制的。