1.plantation n．栽植(a usually large group of plants and especially trees under cultivation)

词根记忆：来自plant(v.种植)

例：Newly freed workers enacted lien laws to hasten the downfall of the plantation economy.

同根词：plantlet(n．小植物，苗木)

2.plateau n．（上升后的）平台期(a level of attainment or achievement);v.达到平台期(to reach a level period, or condition of stability or maximum attainment)

词根记忆：plat(平)+eau--平台期

例：When my sales hit a plateau ,my boss gave me a pep talk(鼓舞士气的讲话)．//Her fever plateaued at 103 degrees, and then began to fall.

3.platform n.平台(a usually raised horizontal flat surface operating system)

词根记忆：plat(平的)+form(外形)--平台

例：operating platform操作平台

4.plausible a．似是而非的，貌似有理的(superficially fair reasonable, or valuable but often specious)

联想记忆：plaus(鼓掌)+ible--鼓掌的--看似有理，所以鼓掌--貌似有理的

例：Of the two plausible explanations for the decline in the population of sea otters, disease is the more likely one.

同根词：plaudit(n.称赞)；applause(n.鼓掌)

5.plead v.作为辩护或理由提出(to offer as a plea usually in defence)

例：The defendant pled no contest to criminal charges.

6.pledge n./v.保证；许诺(to promise the performance of)

例：A $ 100 million investment in the search for extraterrestrial intelligence was pledged by the government.

7.plot n.小块土地（a small land）；计划(plan)；情节(story)

例：experimental plot实验田

8.plow/plough n．犁(an implement used to cut, lift, and turn over soil especially in preparing a seedbed)；v.费力穿过(to move through)

联想记忆：pl+ough（看作tough坚硬的）--在坚硬的土地上犁--犁；费力穿过

例：The ship plowed through the waves.

9.plume n.（一）股，（一）团(尘、火、水等)(a cloud of sth. that rises and cures upwards in the air)；羽毛(a large feather)；（从火出或烟道喷出的）岩浆柱 (any of several columns of molten rock rising from the earth's lower mantle)

例：The surface mark of an established plume is a hot spot-an isolated region of volcanoes and uplifted terrain located far from the edge of a surface plate.