词汇	膳食主要成分
释义	膳食主要成分 dietary staple
随便看	gradient of avoidance gradient of a water table gradient of climb gradient of coal metamorphism gradient of communites and environments gradient of continuous density gradient of degradation gradient of disparity gradient of downgrade gradient of ecosystem Gradient of electric field gradient of electrochemical potential gradient of equal traction gradient of field variable gradient of generalization gradient of gravity gradient of groundwater level gradient of groundwater table gradient of infection gradient of innovation gradient of keelblocks gradient of land used gradient of lighting gradient of moisture gradient of motivation