For your career, Betula forest without relying on heaven - sent, mainly by self - seeking.适合你的事业, 白桦林不靠天赐, 主要靠 自我 寻找.Arimatsu economic timber , Parkinson , Chatham , Betula, Tilia, Green and other species.经济用材林有松 、 柏、漆、桦...

桦木属...

Betula的音标：...