1. As the rodents scurry about eating Douglas fir seed, their droppings are distributed widely in the burned area of a forest.

2. Bolman has studied regional variation in Douglas fir seed yields.

3. The most common construction woods are Douglas fir, hemlock, spruce, pine, and some cedar.

4. The high purity of guaiacyl lignin in Douglas fir fiber.

5. Fog crowns towering conifers, such as Douglas fir and yellow cedar, in the Pacific temperate rain forests of Vancouver, British Columbia.

6. The Fremont climber had leaned a 25-foot-tall Douglas fir trunk against the cliff to shinny up.

7. Sparkle's hull was built of two laminates of diagonally laid red cedar on an inner core of longitudinal Douglas fir.

8. Currently, the bridge towers sit on concrete foundations that are anchored to bay soils by 85-foot Douglas fir timbers.

9. The wood species included yellow cedar, red cedar, western hemlock, douglas fir, white oak, maple and Fokien cypress.

10. It is recognized that 12 species are very stronger harmfulness to forest, especially Douglas fir beetle.

10. try its best to gather and build good sentences.

11. A total uniform load of 16000 lb is carried by a beam of Douglas fir.

12. Douglas fir (Pseudotsuga menziesii) is Canada's largest tree and comprises two distinct species: Coast Douglas fir and Interior Douglas fir.