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Jyutping tan1 tou3 loeng4
Pinyin tūn tǔ liàng

Definitions (Wiktionary)
  1. noun
    cargo-handling capacity; throughput

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Jyutping tan1 tou3 loeng6
Pinyin tūn tǔ liàng

Definitions (粵典–words.hk)
  1. 名詞
    一個​機場​或者​港口​等​設施​處理​咗​嘅​貨​物​數​量
    (of ports or airports) handling capacity; volume of freight handled