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。
Various sizes of caisson will be built, including one 15 metres (50 feet) or so in diameter, large enough to fit over a whole blowout preventer.
此外还将建造大小各异的沉箱，包括一个直径约为15米(50英尺)、足以覆盖整个防喷装置的沉箱。
According to the project, a new paving system will be added to the existing one: a layer of stones of various sizes, between 2 and 3 cm in diameter.
根据该项目，将在现有基础上增加一个新的石板路系统：直径在2和3厘米之间的不同型号的石材面层。
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