https://online2.tingclass.net/lesson/shi0529/0009/9907/591.mp3
https://image.tingclass.net/statics/js/2012
red letter day 非常快樂或值得慶賀的日子，有紀念意義的日子
Today is a red letter day for them.
今天對他們來說是個大喜的日子。
It was a red letter day for me. My son came home.
那天對我來說是個大喜日子，我兒子回來了。
