To employ both indigenous and modern (or foreign) methods simultaneously; to combine traditional and advanced approaches.
这家公司在产品研发上，秉持着土洋并举的原则，既吸取传统工艺的精髓，又大胆引入国际先进技术。
In product research and development, this company adheres to the principle of "using both indigenous and modern methods," both drawing from the essence of traditional craftsmanship and boldly introducing international advanced technologies.
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