Whereas pigments are able to alter a petal ' s colour even when they are inside a vacuole , because the cell contents surrounding the vacuole are transparent , smelly molecules must find a route to the sniffer ' s nose by getting out of the cell and evaporating 色素即便是位于液泡中，它也能改变花瓣的颜色，这是因为液泡外包绕的细胞内容物是透明的，而气味分子必须穿过细胞并挥发才能为闻者所闻。
The proposal for " rainflower " is to articulate the creation of kinetic movement and electric energy from rainwater through sculpture . the top of the sculpture consists of five petals , with a leaf beneath each petal of hong kong s city flower , each being an individual but united by nature 雕塑顶部有五块花瓣，每块花瓣的下方均有一块叶；和人一样，它们既是一个个独特的个体，同时和其他个体有不可分割的关系。
The probes of chs , phya , cop1 , cip7 and hy5 genes were synthesized by total rna extracted from the cortex tissue of tuberous root of turnip , the probes of pal and chi were synthesized by total rna extracted from the petal tissue of eustoma , and the probes of as were synthesized by total rna extracted from the fruit tissu e of strawberry 采用的探针中， phya 、 cop1 、 cip7 、 hy5及chs基因的探针是利用芜菁的肉质根周皮层的总rna合成， pal和chi基因的探针是利用草原龙胆花瓣的总rna合成， as基因的探针是利用草莓果实的总rna合成。
After that the aoa in different parts of rose flower organs and petals from various developmental stages and have been investigated . it was found that the aoa of petals , stamen & pistil was higher than other parts ; the aoa of petals trended to be lower during the process of development , mature and ageing . 3 用5种不同方法证实了玫瑰花具有很强的抗氧化活性后，对其不同发育时期和花器官不同部位的抗氧化活性进行比较，发现花瓣和花蕊是玫瑰花的主要抗氧化部位；随着发育、成熟和衰老，花瓣的抗氧化活性总体上呈下降趋势； 3
