“冷杉”的英语

冷杉 、 云杉和松树都是针叶树.Firs, spruces and pines are conifers.鲍尔曼曾研究过道格拉斯冷杉种子产量地区间的差异.Bolman has studied regional variation in Douglas fir seed yields.云杉和冷杉的针叶生长是有限的.The growth of spruce and fir needles is determinate....