这是因为我们所创造的专利制度给了创新者对其所创之物的暂时垄断权，这促使创新者对知识敝帚自珍，唯恐助了竞争者一臂之力。
That is because we have created a patent system that gives innovators a temporary monopoly over what they create, which encourages them to hoard their knowledge, lest they help a competitor.