プログレッシブ和英中辞典(第4版)の解説
ぶんき【分岐】
divergence
ここで線路が幹線から分岐する
Here the track diverges [branches off] from the trunk line.
そのころからこの言語がいくつかの方言に分岐し始めた
After that this language began to break up into several dialects.
分岐線
a branch (line)
分岐点
〔線路の〕a junction；〔十字路〕a crossroads
その駅は鉄道の分岐点だった
That station was located at a junction (point).／The tracks branched off in various directions at that station.
人生の分岐点に立っていた
He was standing at the 「turning point [crossroads] of his life.