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heliacal的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
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)"
