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。
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。
This paper introduced the technology of pigging, diameter measuring & pressure testing for Guangdong LNG trunk-line.
本文介绍了广东液化天然气输气干线工程应用的清管测径试压技术。
应用推荐