1.pollen n．花粉(fine powder formed in flowers, which fertilizes other flowers when carried to them by the wind, insects, etc.)

例：Maize pollen is dispersed by the wind and frequently blows onto milkweed plants.

2.pollinate v.授粉，傳粉(to make plants fertile with pollen)

詞根記憶：pollin(花粉)+ate--授粉

例：Their flowers are pollinated by birds.

派生詞：pollination(n．授粉)；pollinator(n．傳粉媒介，傳粉昆蟲)

3.pollutant n．污染物(sth. that pollutes)

詞根記憶：來自pollute(v.污染)

例：Nitrogen dioxide is a pollutant emitted by automobiles.

同根詞：pollution(n．污染)

4.polygraph n．測謊器(lie detector)

詞根記憶：poly（多，眾）+graph(寫，記錄)--寫得多的或從多方面記錄的--測謊器

例：polygraph test測謊

5.population n．人口(the whole number of people or inhabitants in a country or region); 生物種群（the organisms inhabiting a particular locality）

詞根記憶：popul(人，大眾)+ation--人口

例：Hunters alone are blamed for the decline in Greenrock National Forest's deer population over the past ten years.

同根詞：popularity(n.大眾性；流行)

6.porcelain n．瓷；瓷器(china)

發音記憶：“跑四鄰”--賣瓷器需要跑四鄰八方

7.porpoise n．海豚(dolphin)

例：Environmentalists advocate the use of acoustic alarms as a means of protecting the harbor porpoise population.

8.portfolio n.文件夾(a hinged cover or flexible case for carrying loose papers, pictures, or pamphlets)；投資組合（如債券和股票）(the securities held by an investor)

例：Corporate officers and directors commonly buy and sell stocks in their own corporations for their own portfolios.

9.portrait n．肖像：相片(picture, photo)

聯想記憶：por+trait(特點，特性)--描繪某人的特點--肖像

例：Most portrait studios use more color film than black-and-white film.