Brittleness remains a problem when building steel structures in cold conditions, such as oil rigs in the Arctic.

在寒冷条件下建造钢材结构，比如北极地区的石油钻塔，钢的易碎性仍然是一个问题。

But as Bamako has grown at one of the fastest speeds in Africa, its distinct buildings have been replaced with modern concrete and steel structures.

但随着巴马科成为非洲发展最快的城市之一，其独特的建筑已被现代混凝土和钢结构所取代。

The steel structure of the ship blocks the moonlight, it blocks the surrounding street lamps, it blocks all ambient light.

船的钢结构挡住了月光， 它挡住了周围的路灯，它挡住了所有的环境光。

However, forming the tower's core after the steel frame had been erected created further logistical challenges — with the core's formwork needing to be small enough to navigate through the steel structure to the core's location.

然而，在钢框架搭建完成后，形成塔楼的核心部分带来了进一步的后勤挑战——核心模板需要足够小，才能穿过钢结构到达核心部分的位置。