ragweed pollen

常见例句

It's enough to make you grab a tissue: Minneapolis has tacked 16 days to the ragweed pollen season since 1995;
下麪的數據將使你忍不住抓起一張紙巾：明尼阿波利斯市自1995年以來的花粉季增加了16天；
It's enough to make you grab a tissue: Minneapolis has tacked 16 days to the ragweed pollen season since 1995; LaCrosse, Wisc.
下麪的數據將使你忍不住抓起一張紙巾：明尼阿波利斯市自1995年以來的花粉季增加了16天；
Conclusion Significant difference exists between the extract of artemisia pollen and ragweed pollen, with the former being more complicated.
結論艾蒿花粉與豚草花粉提取液蛋白組分差異較大，前者更複襍；

So yes, there will be more ragweed pollen, and somewhat more pollen from all plant species.
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Such traits -- whether of viruses, ragweed pollen or cancer -- are called antigens.
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Dr Epstein offers a novel twist: he thinks that rising carbon dioxide concentrations may be promoting the growth of ragweed, pollen and fungus.
ECONOMIST: Climate change