serve/use as

And in one Yorkshire factory , toy-hungry fathers discovered that its basic product , round doorknobs , could serve a new use as yoyos .

而在约克郡的一间工厂，缺乏玩具的父亲们发现，那里最基本的产品球形门把手有个新用途，可以被做成悠悠球。

When Toyota subsidiary Denso originally developed QR codes in their black and white form , they were meant to serve a functional use as a means to track auto parts .

当初日本丰田汽车公司（Toyota）的子公司日本电装公司（Denso）开发出黑白二维识别码只是为了跟踪汽车部件。