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pollen count
释义
pollen count
n.
(名词)
The average number of pollen grains, usually of ragweed, in a cubic yard or other standard volume of air over a 24-hour period at a specified time and place.
花粉计数,花粉统计:在一特定时间和地点二十四小时以上,一立方码或其它标准空气体积中花粉粒、通常是豚草的花粉粒的平均数目
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earths
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更新时间:2026/5/23 6:00:03