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他们为了修护臭氧层,遏止温室效应,保护土壤和拯救热带雨林,必须奔走游说。
They must campaign to repair the ozone shield, halt the greenhouse effect, preserve soil and save the tropical rainforest.
应用不同活化剂处理不同性质的磷肥 ,对其在玄武岩母质的桉树人工林土壤中的生物效应及其作用机理进行了研究。
Several activation agents were used to treat various phosphate fertilizers and their biological effect and mechanism in soil under the eucalypt plantation on basalt latolol were studied.
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