Clover is actually a type of wild plant with flowers shaped like cotton balls and usually has three leaves on each stem. In fact it is very rare to find a four-leaf clover.

三叶草实际上是一种野生植物，它的花朵形状如同棉花球，通常在每一支梗上有三片叶子。事实上，四个瓣的三叶草是非常罕见的。

It is believed that to accidentally find a four-leaf clover is a sign of good luck. Moreover, the shape of four-leaf clover resembles the symbol of the crucifix. There is also an English saying "to live in clover" which basically means "to have enough money to be able to live comfortably".

人们相信，偶然发现四个瓣的三叶草是一种幸运的象征。而且，四瓣三叶草的外形和十字架相似。英语中还有一句谚语叫做“住在三叶草里”，其基本意思就是“拥有足够多的钱，能够十分安逸地生活”。