求翻译：向日葵花是一种象征着希望的花。许多朋友不明白为什么向日葵总是绕着太阳装原因，其实这主要是向日葵的茎的生长区内有一种会抑制细胞伸长的物质，叫叶黄氧化索，这种物质与生长素的浓度分布正好相反，光的一侧浓度高，背光的一侧浓度低。因此，向日葵的花盘之所以总是朝着太阳转，每天从东到西，是向日葵体内的生长素与叶黄氧化素共同作用的结果。是什么意思？

Sunflower is a symbol of hope to spend. Many friends do not understand why the sunflower is always installed around the sun because, in fact, it is mainly the growth of sunflower stems have a district would inhibit the cell elongation of the material, called the cable leaves yellow oxide, a substanc

sunflower flower is a symbol of the hope that the flower. Many of his friends do not understand why sunflowers are always installed around the sun, and in fact, this is mainly because of the sunflower stems of growth in the region will have an inhibiting cell elongation of substances, which is calle

The sunflower flower is one kind is symbolizing the hope flower.Many friends did not understand why the sunflower always does install the reason around the sun, actually this mainly is in sunflower's stem growth area has one kind to be able to suppress the material which the cell elongates, is calle

Sunflowers flowers of the flower is a symbol of hope. Many friends do not understand why sunflowers always turns around the Sun put the reason, in fact, this is mainly sunflower stem growth in the region had a inhibits cell elongation of material, called lutein oxidized cables, this substance and co

Sunflowers flowers of the flower is a symbol of hope. Many friends do not understand why sunflowers always turns around the Sun put the reason, in fact, this is mainly sunflower stem growth in the region had a inhibits cell elongation of material, called lutein oxidized cables, this substance and co