单词	grey pea
释义	同 field pea-- grey pea--Pisum arvense
随便看	principal radius of gyration of area principal rafter principal ray principal reaction principal reaction--main reaction principal refractive indices principal register set principal representation principal resonant frequency principal restraint principal result interpreter principal river principal room principal room (in china always facing south) principal root principals principal sacrificer principal scale principal scope of a book principal seat principal section principal section of crystal principal section of quadric principal sector principal sentence