So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.
蚜虫的运动也是如此，当吃完一株食用植物的幼叶，它们的后代会飞到另一株宿主植物上，没有蚜虫会再回到最初的地方。
Caterpillars eat the young leaves of this plant.
毛毛虫吃这种植物的嫩叶。
Iron deficiency is characterized by chlorosis between veins in young leaves.
缺铁的特征是嫩叶的叶脉之间萎黄。
They had blackened bark, but were otherwise looking rather well, many of them wreathed in new young leaves.
它们的树皮烧黑了，但看上去还不错，其中许多还长出了新的嫩叶。
The larva attacks the young leaves and buds of Michelia figo and Magnolia grandiflora.
以幼虫为害广玉兰、含笑的嫩叶、芽。
The results showed that young leaves and shoot-tips are the best explants for PLB induction.
试验结果表明：幼叶与茎尖是蝴蝶兰原球茎诱导的较佳外植体；
Why use new teas with aged leaves to fill in the pillow core but not those with young leaves?
为什么枕芯用老叶新茶做填充物，而不用嫩叶新茶？
The young leaves grow on the branches. The swallows fly back home with the greeting of spring.
嫩芽在枝头开始生长。燕子重新回到了自己的家，带来了春的问候。
The whole plant is toxic, especially the young leaves and unripened fruit. The toxicity of ripen fruit is much smaller.
全株有毒，尤以嫩叶及未成熟的果实毒性较大。成熟果实毒性大大降低。
To establish the technical system of rapid propagation, the young leaves, petioles, and stems with buds of Anthurium andraeanum were cultured.
以安祖花的叶片、叶柄、带腋芽茎段为外植体进行组织培养，对其快速繁殖进行了研究。
The DNA samples of different tissue of peach prepared by such method showed the DNA output obtained from young leaves and young fruit was high.
用此方法提取桃不同部位基因组dna，结果分析表明，从嫩叶和幼嫩果实提取DNA产率较高。
The shoots and young leaves from this varietal are often covered with fine hairs, with the pekoe (two leaves and a bud) larger than other tea varietals.
它的芽和嫩叶具备上好的茸毛，白毫（两叶一芽）长且大于其它种类的茶树。
Compare the efficiency of 4 various DNA extraction methods on different plants, using the young leaves of soybean, cucumber, rice and maize as materials.
以大豆、黄瓜、水稻、玉米的幼嫩叶片为材料，采用4种不同的DNA提取方法，比较不同方法的DNA提取效率。
A perennial plant of the genus Sanguisorba, having pinnately compound leaves and apetalous flowers. The young leaves are sometimes added to salads as a garnish.
地榆，美洲地榆一种地榆属多年生植物，有羽状复叶和无花瓣的花。其嫩叶有时加在沙拉中作装饰和配料。
The relative nuclear DNA content of nuclei isolated from young leaves including 4 diploid, 2 triploid and 1 tetraploid was measured by flow cytometry in grape cultivars.
利用流式细胞术对4个葡萄二倍体、2个三倍体、1个四倍体试管苗的细胞核dna的相对含量进行测定。
On the mirror the lizard stabilized at one color of green — the green of young leaves on trees in the spring — and returned to that one color each time I tried the experiment.
趴在镜子上的蜥蜴稳定在一种颜色——绿色，是春树发新叶的那种嫩绿。每次把它放进去时都回归到这个颜色。
There were many trees of varying sizes, and some had just been transplanted, but all were shooting up fast, standing straight and stout and covered with light green young leaves.
这里许多树大小参差不一，有的移植不久，不过都长得很快。 在一个时期内，都挺直有神。 新生的树叶嫩绿有生机。
Using stems and young leaves of Rubus biflorus as explants, this paper researched the effect on inducing callus, budlets and roots and plantlet regeneration of different concentration hormone.
利用粉枝莓的茎段和幼嫩叶片作为外植体，研究了不同激素水平对诱导产生愈伤组织、芽和根，完成植株再生的影响。
Using stems and young leaves of Rubus biflorus as explants, this paper researched the effect on inducing callus, budlets and roots and plantlet regeneration of different concentration hormone.
利用粉枝莓的茎段和幼嫩叶片作为外植体，研究了不同激素水平对诱导产生愈伤组织、芽和根，完成植株再生的影响。
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