Meteorological is not the name of the science. It is the describing word for things that belong to that science — weather as scientists measure it: rain, wind, heat, storms, air pressure. A meteorological report, meteorological data, a meteorological office: all of these are about weather, written in a formal, scientific voice.

Meteorological氣象的 is not the name of the science不是這門科學本身的名稱。It is the describing word for things that belong to that science它是用來形容屬於這門科學的事物的形容詞 weather as scientists measure it: rain, wind, heat, storms, air pressure也就是科學家測量的天氣：雨、風、熱度、暴風雨、氣壓。A meteorological report, meteorological data, a meteorological officemeteorological report（氣象報告）、meteorological data（氣象資料）、a meteorological office（氣象局） all of these are about weather, written in a formal, scientific voice這些都是關於天氣的說法，用正式、科學的語氣寫成。

In ordinary talk people almost never say it. They say weather. 'Bad meteorological conditions' is the tidy official phrase; 'terrible weather' is what a person actually says to a friend.

In ordinary talk在日常對話裡 people almost never say it人們幾乎不會這樣說。They say weather他們會說weather（天氣）。"Bad meteorological conditions" is the tidy official phrase「Bad meteorological conditions」是工整的官方說法 "terrible weather" is what a person actually says to a friend而「terrible weather」才是一個人真的會跟朋友說的話。

Though actually, it is also not about meteors (shooting stars). The two words grew from the same old idea of 'things high in the sky', but in today's English they have gone different ways, and mixing them up is a very common honest mistake.

Though actually不過其實 it is also not about meteors (shooting stars)它也跟meteors（流星）沒關係。The two words grew from the same old idea of 'things high in the sky'這兩個字源自同一個古老的概念，也就是「天上高處的東西」 but in today's English they have gone different ways但在現代英文裡它們已經分道揚鑣 and mixing them up is a very common honest mistake把它們搞混是很常見、無心的錯誤。

Use meteorological when the context is science, news, or an official warning. Use weather everywhere else.

Use meteorological when the context is science, news, or an official warning在科學、新聞或官方警報的情境下用meteorological。Use weather everywhere else其他場合都用weather。