The only real aesthetic difference? A slightly lighter case color.

两者外观上唯一的区别在于，新款的外壳颜色稍浅。

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The scientists also found that darker whales, in this case sperm and fin whales, tended to not get sunburned as much as lighter blue whales.

科学家还发现深颜色的鲸鱼，比如长须鲸和抹香鲸，不会像浅蓝色的鲸鱼那样遭受同等程度的灼伤。

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Solid-fuel rockets, in which the fuel and oxidiser are pre-mixed into a stable, solid propellant and then packed inside the case of the rocket, are simpler, lighter and relatively safer.

固体燃料火箭发动机的构造更简单、分量更轻，而且相对更安全。 在固体燃料火箭发动机里，燃料和氧化剂被预先混合成稳定的液态推进剂，然后被塞满火箭发动机的燃料箱里。

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Lee plays Bond's nemesis Scaramanga, who kills using the gun made from a cigarette case, a lighter and a pen.

BBC: Bond assassin's golden gun stolen

It is thinner, lighter and offers a metal case.

FORBES: Nokia's Windows Phone Slowly Gaining Traction

In each case, the strained liquid gains a smoother, lighter texture, and often, a glossy sheen, he says.

WSJ: Just One Thing