heliacal
adj.
太陽的；和太陽同時或幾乎同時出沒的
英語翻譯 Adjective:
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pertaining to or near the sun; especially the first rising of a star after and last setting before its invisibility owing to its conjunction with the sun;
\\\"the heliacal rising of the Dog Star\\\"
\\\"the heliacal or Sothic year is determined by the heliacal rising of Sothis (the Egyptian name for the Dog Star)\\\"
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