When a design has low cohesion, it has classes and methods that are not grouped well.

当设计的内聚力较低时，它就不能良好地组织类和方法。

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ELWa warns that failure to deliver would result in Wales getting caught in the low skills, low growth trap, which in turn would lead to a stagnant labour market, a breakdown of social cohesion and outward migration from many areas.

BBC: 'Open all hours' learning unveiled