petrodollar

n US dollar earned by a country that exports petroleum 石油美元（国家出口石油所得的美元）.

pestilence, pestilent, pestle, pet, pet name, pet shop, pet subject, petal, petalled (US petaled), petard, peter, petit bourgeois, petite, petition, petitioner, petrel, petrifaction, petrify, petro-, petrochemical, petroglyph, petrography, petrol, petrol bomb, petrol fumes, petrol tank, petroleum, petrologist, petrology, petticoat, pettifogging, pettily, pettiness, pettish, pettishly, pettishness, petty, petty cash, petty larceny, petty officer,