54. be in prison 入獄　　 be out of prison 出獄

53. principle　 原理　 It is a matter of principle.　 這是一個(gè)原則問題

　 stick to the principle = live up to the principle遵守原則 on principle　 按照原則

52. principal 最重要的　　 The yellow river is one of the principal river of China.

51. primary　 最初的 the primary school 小學(xué)　 the primary forest 原始森林

the primary meaning of this word 這個(gè)單詞原義 a matter of primary importance 頭等重要大事

50. take pride in = be proud of 為…感到自豪

49. previous　 先前的　 a previous engagement 預(yù)約　 I have no previous experience of this job.

48. press the bell 敲鈴　　 press the button 按鈴　　　 press conference 記者招待會

press sb for sth 催促 The bank is pressing us for repayment of the loan.　 催我們還貸款

pressure　 .壓(力)　　 under the pressure of　　　 take one’s blood pressure 量血壓

47. preserve　 保護(hù)　 preserve the forest　　 preserve public order 維護(hù)公共秩序　

46. presence　 在場；出席　　 May I require your presence ?　　 in the presence　 of 在…面前

　present　 現(xiàn)在的，出席的　　 be present at = attend　　 the students present　 出席的學(xué)生

　　 禮物，現(xiàn)在　　 at present　 現(xiàn)在　　　 for the present　 暫時(shí)

　 贈(zèng)送　 present sb sth　 present him a book = present a book to him

　　　　 Sample are presented free.　 免費(fèi)贈(zèng)送

presently　 不久 (soon, before long)　　

45.prepare 準(zhǔn)備　 prepare sth　　 prepare for sth 為…而做準(zhǔn)備　 be prepared for 為…做準(zhǔn)備

　　　　　　　　　 make preparations for做準(zhǔn)備