Thus, both the customer relation (in the commercial organization) and the employee relation originate in contract, but in contracts of different kinds.

因此，（在商业组织中）客户关系和雇员关系都产生于合同，只不过是不同形式的合同罢了。

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The timer worked like a thermostat, on the principle that two different kinds of metal will expand and contract at different rates when their temperature changes.

计时器的工作原理类似于恒温器，当温度变化时，两种不同金属以不同速率缩小或膨胀。

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So here's another example of the distinction between these two different kinds of arguments, these two different aspects of the morality of contract.

这个例子再次说明，两种不同的论断，契约的道德力量的两个不同方面之间的区别。

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