“冷杉”造句

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.

• #冷杉