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世界上任何一个国家或任何一个企业,都不能在所有技术领域,甚至某一技术领域总是领先,都不能,也没有必要自行解决全部技术问题;对于自己需要的技术,除部分靠自己研
No country in the world or any enterprise can always lead in all technology fields or even a certain technology field. It cannot and does not need to solve all technical problems on its own;