With or without the presence of the mei-yu front, the eclipse path is embedded in a humid and unstable airmass from India to the Cook Islands.

不管有没有梅雨锋的出现，从印度到库克群岛，日食路径都已嵌入潮湿和不稳定的气团中。

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Results using routine surface meteorological variables show that we can get airmass categories each having distinct feature and circulation pattern by the methodology.

用淮阴市常规地面观测资料对方案进行的试验表明，该方案能够将不易区分的天气系统分成鲜明天气特征的气团类别。

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Influenza is a year-round event in the tropics. If the tropical airmass around the Earth's equator expands, as new areas lose their seasons they may also begin to see influenza year-round.

在热带地区，一整年都是流感好发季节，倘若赤道附近的热带性气团向两极扩张，一些季节错乱的地区便可能发觉流感疫期已稍稍延长。

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