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File:Local Storm Signal Code, Hong Kong Observatory, 1950.png

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粵語: 1950年香港天文台出版 ge 本港風暴訊號表
日期
來源 https://www.hko.gov.hk/tc/education/tropical-cyclone/classification-naming-characteristics/00445-typhoon-and-hurricane.html
作者 Hong Kong Observatory
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