A fast-growing, broad-leaved tree or shrub belonging to one of the 35–60 species of the genus Betula found in northern temperate and sub-Arctic regions, yielding wood used to make furniture and plywood.
Mike Allaby
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。