pollen count
number indicating the amount of pollen in the atmosphere, used as a guide to possible attacks of hay fever, etc 花粉计数(指示空气中的花粉数量, 供预测枯草热等病症之参考).
The man who manoeuvres carelessly into his five shillings worth of space ,at one of Europe's myriad permanent sites may find himself bumping a Bentley.