Irrigation is the primary agricultural use of human waste in the developing world.
在发展中国家，灌溉是人类排泄物的主要农业用途。
The stability is one primary problem of construction waste landfill site engineering.
稳定性是建筑垃圾填埋场工程的主要问题之一。
Disposal of nonbiodegradable waste is a primary source of pollution.
对非生物降解物的处理是污染的主要来源。
Disposal of nonbiodegradable waste is a primary source of pollution.
对非生物降解物的处理是污染的主要来源。
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