A broch is a huge Iron Age structure made completely of dry stone with walls five metres thick.

Broch 是铁器时代一个巨大的建筑，完全由干燥的石头制成，墙壁厚 5 米。

You can see how top heavy the population's age structure is here and how in the next few years it will grow even more so that way.

这里大家看到的是一个头重脚轻的人口年龄结构，在接下来的几年里这个状况还将加剧。

EGGLESTON: Second, and more related to what I usually study, is that the population age structure in Japan is such that it's leading the world in the demographic transition.

埃格尔斯顿：其次， 与我通常研究的内容更相关的是，日本的人口年龄结构在人口结构转变方面处于世界领先地位。

" That would be true except for the inverted age structure (more old people than young people) and all the uniformly negative consequences of an inverted age structure, " says Prof Murray.

默里教授说：“除了倒置的年龄结构（老年人多于年轻人）以及倒置的年龄结构带来的所有负面影响之外，情况确实如此。”