On the eve of the Spring Festival, every household will paste up on doors a spring coupletwritten on red paper to give a happy and prosperous atmosphere of the Festival.
In the past, the Chinese usually wrote their own spring couplets with a brush or asked others to do for them, while nowadays, it is common for people to buy the printed spring couplets in the market.
They are usually posted in pairs because even numbers are connected with good luck and auspiciousness in Chinese culture.
在大年三十晚上，家家户户都会在门上贴上用红纸写的春联，传递出喜庆热闹的节日气氛。
在过去，中国人常常用毛笔自己写春联或者是请别人写春联，而现在，人们习惯购买市场上印刷好的春联。
春联通常是成对张贴。因为双数在中国文化中是好运和吉祥的象征。
【讲解】
文中的spring couplet就是“春联”的意思，其中couplet是名词，意为“对句;对联”，如：a congratulatory couplet(一幅贺联)，在我国很多农村地区，春节时还会贴年画(pasting New Year prints)，最出名的就是门神(Door Gods)。
最后一段中的even作形容词，意为“偶数的”，反义词是odd(奇数的)，也可以表示“平滑的，平坦的”，如：even surface(平滑的表面);它还可以作动词，意为“使平坦”，如：even the lawn(压平草地)。
对联的英语单词是couplet。这个单词其实很好记，它前面是couple，是“对”的意思，后面就加了一个字母t。在英英词典中，A couplet is two lines of poetry which come next to each other, especially two lines that rhyme with each other and are the same length.
During the festival, each family would light firecrackers and paste up Spring Festival couplets, and the relatives and friends would send New Year's greetings go each other to wish everything smoothly in the new year. 过年的时候，每家都放鞭炮，贴春联。亲戚朋友之间要相互拜年，预祝在新的一年里事事顺利。 The Chinese people love to stick couplets on the Spring Festival, which are also written on red paper. 春节时，中国人喜欢贴春联，春联也是用红纸写的。 Spring scrolls, also known as spring posts, are poems written on red rice paper to celebrate the New Year. 春联，也叫“春贴”，是人为庆祝春节在红色纸上写下的诗句。 During the Spring Festival,every family pastes the Spring Festival couplets on their doors to express sincere blessings and good wishes. （春节期间，每家每户都在门口张贴春联以表达真诚美好的祝愿。）
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