满-通古斯语族诸语言的“天空”或“天”一词,除~*abugan外,还有buga、bug、bog。不过,满语支一般说~*abugan的较多,如女真语abka/abha,满语abka、锡伯语avqa,通古斯语支的赫哲语也为abka;而通古斯语支的鄂伦春语及鄂温克语则为buga、bug、bog。我们认为,该词的早期语音结构形式应是buga,而bug、bog则是通古斯语支诸语言不同方言 Full - Tungusic language “sky” or “day” in addition to ~ * abugan, buga, bug, bog. However, the Manchu branch generally said ~ * abugan more, such as Jurchen language abka / abha, Manchu language abka, Xibe language avqa, Tungusic language Hezhen language also abka; and Tungusic language Oroqen and Evenki For buga, bug, bog. In our opinion, the early phonetic structure of the word should be buga, whereas bug and bog are Tungusic languages ​​in different dialects