negative income tax负所得税

见tax-credit system条。

• parson
• parson bird
• parsons，sir charles algernon
• parsons，talcott
• parsons，william
• parsuna
• part
• partake
• partaker
• partal
• partch，harry
• parted
• parterre
• parthenogenesis
• parthenon
• parthia
• parti
• partial
• partial differential equation
• partial pressure
• participant
• participate
• participation
• particle
• particle accelerator