The results showed that with pear genus dwarf stocks, the most combinations' trunk diameter is thinner, tree height is lower, growth shoots length is shorter, but crown diameter is bigger.

结果表明，梨属矮化砧木做中间砧，多数组合表现出树体干径细，高度低，发育枝短，但冠径较大。

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Emergents, which do not form a continuous layer, are usually the giants of the forest, reaching heights of 35 to 70 m or more, and trunk sizes of over 2 m in diameter.

不形成连续层的新生植物通常是森林中的巨人，高度可达35至70米或更高，树干直径超过2米。

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Before reaching the cave, I climbed over a large petrified tree trunk, three feet in diameter, dating back millions of years.

在到这个山洞之前，我爬上过直径有3英尺的石化树干，那树有几百万年的树龄了。

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As I was walking into work this morning, I saw an evergreen that's probably got a tree trunk two or three feet in diameter that was completely on its side.

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