where the competition is free, the rivalship of competitors, who are all endeavouring to justle one another out of employment, obliges every man to endeavour to execute his work with a certain degree of exactness.
In general, if any branch of trade, or any division of labour, be advantageous to the public, the freer and more general the competition, it will always be the more so.
我是先在中文版上找到这两句的位置，再在英文版的相应位置摘录下来的，是英文版原文，所以准确度是有保证的，希望能帮到你。
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