牢牢地关上门窗，防止花粉和孢子的进入。
Keep your Windows and doors tightly closed to help prevent pollen and spores from entering into your home.
在次生造孢细胞、花粉母细胞和小孢子后期都有液泡数量明显增加或体积增大的过程。
At the late stage of the sporogenous cells, mother pollen cells and microspores, the vacuoles remarkably increased in quantity or size.
研究发现，着落在花上的花粉粒数和菌孢子数呈强正相关。
Numbers of pollen grains and spores deposited on flowers were strongly and positively correlated.
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