a great card的用法和樣例：
例句
- He became a big card from one night.
他一夜之間成了風雲人物。 - He is the great card of this small town.
他是這個小鎮的要人。 - His father is a big wheel in the government.
他的父親是政府里的要人。 - Puluohuoluofu is a mining industry magnate.
普羅霍羅夫是個礦業大亨。 - In the book,a tycoon unaccountably becomes the hero's friend.
在這本書中，一個大亨莫名其妙地成為了那位英雄的朋友。
