为期四日，这些非正规的研讨班将会激活你的潜能。
Run over four days, the course holds informal workshops that will develop your talent.
为表达对四川地震遇难者的深切哀悼，中国举行了为期三天的全国哀悼日。
China observed three days of national mourning for those killed by the recent earthquake in the province of Sichuan.
那里有公园，犯罪率低，还有各种社区活动，其中包括一年一度为期四天的奥兰治港“家庭日节”。
It has parks, a low crime rate, and community events, including the annual four-day Port Orange Family Days festival.
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