dietetics

n [sing v] science of diet and nutrition 饮食学; 营养学.

die away, die down, die for, die from, die game, die of, die of illness, die off, die out, die to the world, die-cast, die-hard, diehard, dieresis, diesel, diesel-electric, diet, dietary, dieter, dietetic, dietician (also dietitian), differ, difference, different, differential, differential calculus, differentiate, differentiated, differentiation, differently, difficult, difficulty, diffidence, diffident, diffidently, diffract, diffraction, diffuse, diffusely, diffuseness,