作业帮四叶草 英文介绍最好简单点,在三分钟之内能讲完……
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四叶草 英文介绍最好简单点,在三分钟之内能讲完……
四叶草 英文介绍
最好简单点,在三分钟之内能讲完……
四叶草 英文介绍最好简单点,在三分钟之内能讲完……
The four-leaf clover is an uncommon variation of the common three-leaf clover.According to superstition,such leaves bring good luck to their finders,especially if found accidentally.
Clovers can have more than four leaflets.The most leaflets ever recorded is eighteen.It has been estimated that there are approximately 10,000 three-leaf clovers for every four-leaf clover.
According to legend,each leaflet represents something:the first is for hope,the second is for faith,the third is for love,and the fourth is for luck.Legend also holds that if a lady hangs a 4 leaf clover on her door,the next man to come in will become her husband.
It is debated whether the fourth leaflet is caused genetically or environmentally.Its rarity suggests a possible recessive gene appearing at a low frequency.Alternatively,four-leaf clovers could be caused by somatic mutation or a developmental error of environmental causes.They could also be caused by the interaction of several genes that happen to segregate in the individual plant.It is possible all four explanations could apply to individual cases.
三分钟能讲完,在网上的百科全书里查到的.