dig down

挖下去；掘倒

difference, different, differential, differential calculus, differentiate, differentiated, differentiation, differently, difficult, difficulty, diffidence, diffident, diffidently, diffract, diffraction, diffuse, diffusely, diffuseness, diffusion, dig, dig in, dig out, dig up, digest, digestibility, digestible, digestion, digestive, digestive biscuit (also digestive), digestive system, digger, digging, digit, digital, dignified, dignify, dignitary, dignity, digraph, digress,