Any differences between them—one twin having younger looking skin, for example—must be due to environmental factors such as less time spent in the sun.

他们之间的任何差异（例如，双胞胎中有一个的皮肤看起来更年轻）一定是由于环境因素导致的，如在阳光下呆的时间更少。

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The youngster's cheeks were in such a glow that it showed even through her sun-browned skin.

小女孩的双颊红扑扑的，棕黑色的皮肤在阳光下闪闪发光。

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Far out over the sea the sun was setting with such splendor that I would almost have sworn I could hear the water hiss where it touched.

在遥远的海面上，太阳正辉煌地落下，我几乎可以发誓，我能听到水触到的地方发出嘶嘶声。

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Since it is such an important part of diets around the world, researchers like Qi Sun are now looking at its relationship to chronic disease.

VOA: standard.2010.06.25

This eponymous theory is that large masses (such as the moon) partially block the gravitational force from more distant objects (such as the sun).

ECONOMIST: Gravitational anomalies

At least, this is what happens to a pulsar that is the remains of a lonely, companionless star such as the sun.

ECONOMIST: The dizziest, giddiest stars

It could be useful to denote things such as the sun's mass (2.2 hellatons) and energy output (approximately 0.4 hellawatts).

ECONOMIST: Scientists measure a few yoctonewtons for the first time