1.potential n．潛能：可能性（existing in possibility）；a．潛在的，有可能性的(capable of development into actuality)

詞根記憶：potent(潛力的)+ial--潛能

例：However, habitat loss has the potential to reduce genetic diversity.

派生詞：potentially( ad.可能地，潛在地)

2.potter n.陶工(one that makes pottery)

例：The potter placed the wet clay in the oven.

派生詞：pottery(n.陶器;制陶術)

3.poultry n．家禽(domesticated birds kept for eggs or meat)

例：In 1989 Juranians consumed twice as much poultry as fish.

同根詞：poulterer(n．鳥販；家禽販)

4.practical a．實際的(of, relating to, or manifested in practice or action)；實用性的(useful)

詞根記憶：來自practice(v．實踐：練習)

例：They served a ceremonial as well as a practical function.

派生詞：practically( ad.實際地：事實上)

同根詞：practicably( ad.突用地；能用地)

5.practitioner n.開業者（醫生、律師等）(person who practices a profession, esp. medicine)

例：The document indicated that women activists were early practitioners of nonpartisan, issue-oriented politics.

6.pragmatic a．實際的，注重實效的(practical)：實用主義的(relating to or being in accordance with philosophical pragmatism)

詞根記憶：pragm(實際)+atic--實際的，注重實效的

例：This pragmatic approach is buttressed by the government.

派生詞：pragmatically( ad.實際地，實用主義地)

同根詞：pragmatism(n．實用主義)：pragmatist(n.實用主義者)

7.prairie n.大草原(a tract of grassland)

聯想記憶：pr+air(空氣)+ie--大草原上空氣好

例：prairie dog草原土撥鼠

8.prank n．惡作劇，玩笑(a trick)

記：不要和plank(n．厚木板)相混

例：Removing the boxes will reduce the number of prank calls without hampering people's ability to report a fire.

9.precaution n．預防，警惕( care taken in advance)

詞根記憶：pre(預先)+caution(小心)--事先小心--預防，警惕

例：Because sloth bears are smaller than brown and polar bears and are under greater threat from dangerous animals, they may have adopted the extra precaution of carrying their cubs.