例句
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He developed an allergy to pollen.
他对花粉过敏。
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Hay fever sufferers have a worse time when the pollen count is high.
花粉计数高时，枯草热患者的日子就更不好过了。
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Nectar and pollen are very nutritious.
花蜜和花粉是很有营养的。
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pollen granule
花粉粒
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“Auntie told me not to run,” he explained,“on account of my asthma.
” “阿姨叫我不要跑,”他解释道,“因为我有气喘病。”
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I think he's having an asthma attack.
我想他现在是哮喘病发作了。
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As the day goes on, the pollen dries up and becomes hard...
日子一天天过去,花粉干结成了硬块。
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A serologic reaction retards the growth of the pollen tube.
血清反应阻止花粉管生长.
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When pollen maturating , many small calcium precipitates distributed in its cytoplasm, especially in nucleus.
接近开花时的成熟花粉粒细胞质中, 细小的钙颗粒主要分布在营养细胞和生殖细胞中.
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They strip it with their mandibles and pack it into the pollen baskets on their legs.
它用上颚把蜂胶剥下来,把它放进它腿上的花粉篮里.