But lightweight construction techniques, solar cells and battery technologies are constantly advancing.

不过轻量化构造技术，太阳能板和电池技术也在不断进步。

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To achieve the desired lightweight construction, BMW will need to use very large quantities of the material — 150 to 200 kilograms (330 to 440 pounds) per vehicle.

要制成想要的轻质结构，宝马得用大量材料——每辆车需要150到200千克(330到440磅)。

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This is what is considered lightweight construction.

这就是所谓的轻型建筑。

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The technology in the Audi urban concept reflects the full capabilities of the brand, especially when it comes to ultra-lightweight construction.

ENGADGET: Audi's Urban Concept heads to IAA Frankfurt, tickles our EV sensibilities

All controls and materials are subject to the dictates of ultra-lightweight construction in order to ensure they convey a completely unique, sensory allure.

ENGADGET: Audi's Urban Concept heads to IAA Frankfurt, tickles our EV sensibilities

Land Rover's global brand director, John Edwards, is hopeful the Evoque's lightweight construction and relatively low fuel consumption and emissions make it well suited to the job.

BBC: Business