In Thailand, they still sharpen knives against stones, and it's a skill you have to learn: how not to ruin the knife as you're sharpening it.
在泰国，人们仍然用沙石磨刀。怎样在磨刀时不损坏它，是一门需要学习的技能。
He wants greater standardization of components among Sony products so that the company can sharpen its manufacturing skill and reduce costs on the parts that really matter.
他希望扩大索尼产品元件的统一性，使公司能提高制造技术，降低成本。
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