All in all, external causes take on their role through internal causes.

毕竟，外因是通过内因来起作用的。

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The durability of concrete can be defined as its resistance to deterioration resulting from external and internal causes.

混凝土的耐久性被定义为抵抗外部和内部原因导致的恶化的能力。

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Spontaneous combustion of coal seams is a complicated physical-chemical and environmental process and the result of integrated action of many kinds of internal causes and external conditions.

煤层自燃是一个复杂的物理、化学和环境作用过程，是多种内在原因和外在条件综合作用的结果。

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Internal causes of your difference between actual and plan get the same treatment.

FORBES: Three Critical Steps to Review Your First Quarter Results

These are all internal causes, these are things you can prepare for.

FORBES: Why Startups Fail

But much of the trouble stems from internal causes.

ECONOMIST: Lebanon