甘比英文拓展写作-The Anatomy of a Tree-M

The Oak has a majestic look with a large top and a strong, straight, upward-growing trunk. Oaks are long lived trees, with an average life span of 600 years, which means if a father of a big family grows an oak when he was 25, then his 23rd generation grandsons can still enjoy the shades giving by the same oak.

Let's find out how it can become so exuberant from the bottom. First of all, it has a strong root which can grow nearly 5 feet (1.5 m) in the first year of its life. It builds a solid basement, and continuously absorbing water and minerals from soil to the trunk and brunches for 6 centuries' soaring up to the sky.

Secondly, as we go a little bit upper, the main trunk keeps growing thicker and taller, finally end up to 130 feet (40 m) high. Thirdly, upper in the process, it branches out upward, forming a massive canopy on top. There you will see its lobed leaves, which bud in spring, prosper in summer with sufficient sun light and water, turn into autumn colors as they stop photosynthesizing and fall away in winter, putting the tree in dormancy and setting the stage for the next year's cycle.

Then, like any other plants on earth, oaks need to have their fruits and seeds to keep its family big and strong. It takes 20 to 30 years for an oak to yield acorn, its fruit. Most oaks are at their acorn production peak at 50 to 80 years of age (after 80, acorn crop begins to decrease).

Above all, measure from different perspectives like life span, dramatically big  appearance, strong productivity etc, oak is  undisputed the king of trees as well as the western world.