We've spent years listening to greens complaining about the loss of the rainforests, acid rain, and extinctions of mammals, birds and plants.

我们历经多年听着环保主义者们抱怨雨林的丢失、酸雨的出现，以及哺乳动物、鸟类与植物的灭绝。

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The characteristics of Zn of spent alkaline Zn-Mn batteries and its suitable conditions dissolved in nitric acid were studied.

研究了废旧碱性锌锰电池的成分和其中的锌在硝酸中的适宜浸取条件。

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Sodium chloride and hydrochloric acid are often used to regenerate spent ion exchange resins used in water purification.

氯化钠和盐酸常用来再生水净化中用的废的离子交换树脂。

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