原文:Why is this evergreen¹ decorated?

       ....with ornaments², lights, fake snow and Mylar plastic tinsel? 
       In Victorian times, people had already started decorating trees with candies and cakes hung with ribbon. In 1880, Woolworths first sold manufactured Christmas tree ornaments, and they caught on very quickly. Martin Luther, in the 16th century, is credited as being the first person to put candles on a tree, and the first electrically lighted Christmas tree appeared in 1882. Calvin Coolidge in 1923 ceremoniously lit the first outdoor tree at the White House, starting that long tradition. Fake snow and tinsel... Who knows? It's probably related to the song "White Christmas" (we'll get to that soon).

译文:圣诞树被装饰的由来

       ........为什么在圣诞树上装着饰物,灯光,人造雪以及迈拉塑料饰品呢?
       在维多利亚女王时代,人们已经开始用带子系着蜡烛和蛋糕来装饰圣诞树.1880年伍尔沃斯首次销售人造圣诞树饰品,之后这些饰品很快流行.十六世纪的马丁卢瑟是将蜡烛装饰在圣诞树上的第一人,接着1882第一次出现了用电灯装饰圣诞树,1923年Calvin Coolidge总统在白宫室外隆重地点亮了第一棵室外圣诞树,从而开始了长久的传统.人造雪和闪亮的饰品.........谁知道怎么开始的呢?也许与歌曲"白色圣诞"有关吧(我们很快就会接触到这些了)....with ornaments, lights, fake snow and Mylar plastic tinsel?