用英语介绍一下cherry blossom（樱花）简要一点就好,

Japanese samurai used to contemplate death.
This was not some morbid fixation.
Admitting their own mortality forced the warriors to accept that life is a precious and fleeting gift.
They regarded the cherry blossom as a symbol of this insight.
Cherry blossoms bloom for a brief period and then fall at the very height of their beauty.
To the samurai this was a melancholy reminder of death amidst life.
It was an example of great beauty and sadness.
This poignant insight into life and death allowed the samurai to live their lives more fully; they realised that death could come at any moment.

Sakura is the Japanese name for ornamental cherry trees,Prunus serrulata,and their blossoms.Cherry fruit (known as sakuranbo) come from a different species of tree.
Sakura,a well-known and ubiquitous symbol of Japan,are represented on all manner of consumer goods,including kimono,stationery,and dishware.Cherry blossoms are an enduring metaphor for the ephemeral nature of life,and as such are frequently depicted in art.There is at least one popular folk song,originally meant for the shakuhachi (bamboo flute),titled "Sakura",as well as a number of pop songs."Sakura" is also a common Japanese female name.
Sakura is indigenous to the Himalayas and east Asia.Some trees can be found in China and Korea but the largest number and variety of sakura,more than 305 species,can be seen in Japan.Many of them were artificially hybridized or grafted by the Japanese many centuries ago.
"On the other hand,in China,cherry blossom is the symbol of feminine dominance,female beauty and sexuality.Additionally,the cherry blossom is the Chinese symbol of feminine principle and it also symbolizes love in the language of herbs.Interestingly,cherry blossom is the flower of the April in China,whereas in Japan,it is wisteria." Spring flowers of Japan
Japan's most beloved variety is the Somei Yoshino.Its flowers are nearly pure white,tinged with the palest pink,especially near the stem.The flowers bloom,and usually fall within a week,before the leaves come out.Therefore,the trees look nearly white from top to bottom.The variety takes its name from the village of Somei (now part of Toshima in Tokyo).It was developed in the mid- to late-19th century at the end of the Edo period and the beginning of the Meiji period.The Somei Yoshino is so widely associated with cherry blossoms that jidaigeki and other works of fiction often depict the variety in the Edo period or earlier; such depictions are anachronisms.
Other categories include yamazakura,yaezakura,and shidarezakura.The yaezakura have large flowers,thick with rich pink petals.The shidarezakura,or weeping cherry,has branches that fall like those of a weeping willow,bearing cascades of pink flowers.
Annually,the Japanese Meteorological Agency and general public track the sakura zensen,or Cherry-Blossom Front.Nightly forecasts follow the weather segment of news programs.The blossoming begins in Okinawa in January,and typically reaches Kyoto and Tokyo at the end of March or the beginning of April.Then it proceeds north,arriving in Hokkaidō a few weeks later.Japanese pay close attention to these forecasts.They will go to parks,shrines and temples with family and friends and hold a "flower viewing party" known as hanami.Hanami festivals celebrate the beauty of sakura,and for many,it is a chance to relax and enjoy the beautiful view.Hanami custom in Japan dates back to many centuries ago.It is witten in Nihon Shoki that the Hanami festival were already held in the 3rd century.
Most Japanese schools and public buildings have sakura trees outside of them.Since the fiscal and school year both begin in April,in many parts of Honshū,the first day of work or school will coincide with the cherry blossom season.