这是导致“全球变暗”的主要原因之一。全球变暗的现象始于1970年，是空气中的浮质(悬浮微粒)增加所致。

It is a major reason for "global dimming", which has been caused by an increased amount of aerosols in the air since 1970.

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这些大气微粒通过两种途径作用于冰川：首先，悬浮在空气中的微粒吸收太阳光，升高周围空气温度。

These particulates can melt ice in two ways. First, floating in the air, they absorb sunlight and heat the surrounding atmosphere.

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这些微粒没有到达大气的最高层，并且不可能长时期悬浮在空气中而影响全球气候。

Those particles haven't reached the upper levels of the atmosphere and are unlikely to hang around for a long time or affect the global climate.

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