Introduction about concepts of tree , dendrology, and major study objectives relative to the science.介绍树木学、树木的概念, 树木学研究的对象....

dendrology的音标：dendrology的英式发音音标为：[den'drɒlədʒi]dendrology的美式发音音标为：[den'drɑlədʒi]...

n.树木学...