upgrade and update 升级换代
They aren't driven by the Western obsession to update and upgrade.
他们不是痴迷于西方世界的更新和升级。
To update and upgrade products relies on original ideas and advanced technology in our factory.
本厂产品的升级换代,依靠创意独特和技术先进。
And also, factors flow can stimulate the developed areas to update and upgrade their production technology, but result in further backwardness in under-developed areas.
同时要素流动能促使发达地区生产技术更新和升级,而欠发达地区的生产技术则变得更加落后;
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