preservative-- Something used to preserve, especially a chemical added to foods to inhibit spoilage防腐剂=maintain To keep in an existing state; preserve or retain保持
preside over---管理,主管=manage
prestige--- A person's high standing among others; honor or esteem威望；尊重或敬佩=honor
predecessor--- One who precedes another in time, especially in holding an office or a position.前任；An ancestor; a forebear祖先；祖宗=forerunner One that precedes, as in time; a predecessor前任；An ancestor; a forebear祖先；祖宗
predominantly--- Most common or conspicuous; main or prevalent最主要的；最普通的=primarily
precede--- To come, exist, or occur before in time.先于…=prior to ,before
portion--- A section or quantity within a larger thing; a part of a whole部分=part
possess--- To have as property; own持有；拥有To have as a quality, characteristic, or other attribute具有品质、特点=have
potential---shavingspossibility, capability, or power有可能性的=possible
pertinent---shavingslogical, precise relevance to the matter at hand有关系的=relevant
pit--- A natural or artificial hole or cavity in the ground坑=hole
perception--- The capacity for such insight洞察能力=insightful Showing orshavingsinsight; perceptive有洞察力的；有悟性的
penetrate--- To enter or force a way into; pierce.穿过，刺入=go through
patron--- A customer, especially a regular customer顾客=customer
particle--- A very small piece or part; a tiny portion or speck一小份儿或一小点儿=speck A small spot, mark, or discoloration小斑点，小污点或小瑕疵
pants裤子---trousers裤子
rupture--- The process of breaking open or bursting裂开，突然炸开=burst
rural--- Of, relating to, or characteristic of the country农村的=country
rudimentary---Being in the earliest stages of development; incipient处于发展的最早阶段的=undeveloped, unsophisticated
rotate---To turn around on an axis or center绕轴或中心转动=turn, swirl
To proceed in sequence; take turns or alternate循环，交替或轮换=alternate
robust--- Full of health and strength; vigorous健康和有力的=strong
roam--- To move about without purpose or plan; wander漫游=wander
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rigidity--- An instance of being rigid僵化，严厉=stiffness
revise--- To reconsider and change or modify修改，修正=change
retrieve--- To get back; regain.重获；收复；=recover, To get back; regain.重获；收复；重新得到=bring back
To rectify the unfavorable consequences of; remedy. See: recover
restrict--- To keep or confine within limits限制=limit
retain--- To maintain possession of保持=keep
representation--- The state or condition