heliac 英'hiːlɪæk美'hiːlɪæk
基本英英近义反义
adj.与太阳同时出没的¹⁰⁰
Adjective:
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 近义词 heliacal太阳的 |