1. celebrate [ˈselɪbreɪt],作动词,意为“庆祝,庆贺”等 I was in a mood to celebrate.我很想庆祝一下。How do people celebrate New Year in your country?你们国家的人怎样庆贺新年?2. celebration [ˌselɪˈbreɪʃn],作名词,意为“庆典,庆祝活动”等 Only a few people can find any cause for celebration.只有少数几个人能找到庆祝的理由。She wanted the celebration to be a simple family affair.她希望庆祝活动仅限于家人参加。3. cellphone ['selfəʊn],作名词,意为“手机,移动电话” I talked to her on my cellphone.我用手机跟她通了话。The use of cellular phones is not permitted on most aircraft.大多数飞机上不许使用手机。4. decade [ˈdekeɪd],作名词,意为“十年,十年期” A decade later, the company has gone from strength to strength.十年后,该公司已经逐渐壮大。The collection has been in storage for decades.这些收藏品已保管了几十年。5. decay [dɪˈkeɪ],作名词或动词,意为“衰退,腐烂,腐朽”等 The place smelled of decay and neglect.这地方有一股污浊腐朽的气味。Popular cinema seems to have decayed.大众电影似乎已经衰落了。