讲解文本：

lightning marriage 闪婚
Lucy is not a fan of lightning marriage.
Lucy并不中意“闪婚”。
Lighting marriage can save the cost, including saving time and money.
闪婚能节约恋爱成本，包括金钱成本和时间成本。

flash marriage 闪婚
Nowadays, "flash marriage" has become a fashion to unmarried young people.
时下，“闪婚”成了未婚年轻人的一种时尚。

疯狂练习吧！