plank

n.厚板；(政策或纲领的)要点；准则

plainness, plains, plainsman, plaint, plaintiff, plaintive, plaintively, plaintiveness, plait, plan, plane, plane geometry, plane sailing, plane-table, planet, planetarium, planetary, plangency, plangent, plangently, planking, plankton, planned, planning, plant, plantain, plantation, planter, plaque, plasma, plaster, plaster cast, plasterboard, plastered, plasterer, plastic, plastic bomb, plastic explosive, plastic surgery, plasticine (also Plasticine),