preservation

n.保护；维持；保持

Presbyterianism, presbytery, preschool, prescience, prescient, prescribe, prescribed, prescript, prescription, prescriptive, prescriptively, presence, present, present participle, presentable, presentably, presentation, presenter, presentiment, presently, preservative, preserve, preserve from, preserver, preset, preside, presidency, president, presidential, presidium (also praesidium), press, press agent, press baron, press conference, press for, press officer, press photographer, press release, press-box, press-gallery,