pot-holing

n.洞穴探险，洞穴探险运动

Postmaster General, postnatal, postpone, postponement, postprandial, postscript, postulant, postulate, postulation, posture, posturer, posy, pot, pot plant, pot-belly, pot-boiler, pot-bound, pot-herb, pot-hole, pot-holer, pot-hunter, pot-pourri, pot-roast, pot-shot (also pot), potable, potantially, potash, potassium, potation, potato, potato beetle, potato crisp, potboiler, poteen, potency, potent, potentate, potential, potentiality, potentially,