1)Useful elements,有益元素2)useful element,有益元素群3)useful element for crops,农作物有益元素4)useful element for agriculture,农业有益元素5)nutritional and beneficial elements for crops,作物营养、有益元素6)helpful,有益
用法例句
Looking back the history of fujian city and exploring its valuable experience,this could provide helpful reference for promoting agriculture with industry and rural areas driven by urban areas in new period.
