Between 400 and 600 grams, it has no further effect, but when it exceeds 600 grams, it ACTS as a shield against the sun, and slows down melting.

每平方米在400克至600克之间时，不再有进一步的影响；但是当每平方米超过600克时，覆层就起到遮挡阳光的作用，从而减缓融化的速度。

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The James Webb Space Telescope (JWST) will be a giant-its multilayered sun shield stretches 22 meters, nearly twice the length of the Hubble Space Telescope.

詹姆斯·韦伯太空望远镜(JWST)体态硕大无比- - -其多层遮阳板的长度将达22米，几乎是哈勃太空望远镜的两倍。

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Women applauding politely, wearing hats and long gloves to shield their pale skin from the glinting sun.

女士们优雅的掌声传来，火热的太阳妄想侵犯他们雪白的皮肤，却被高帽和手套拦下。

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The Sun's magnetic field and solar wind - mainly in the form of electrons and protons coming out of the Sun - protects the entire Solar System by acting as a sort of shield from cosmic rays (very energetic particles and radiation from outer space).

BBC: Viewpoint: The Sun and climate change