I noted the slight overlap of its sheet-iron plates, which resembled the scales covering the bodies of our big land reptiles.

我看到船身上的钢板，彼此稍微的鳞次着，很像地上大爬虫类动物身上所有的鳞甲。

Other Heterostracans had fused plates on their heads, with diamond-shaped or elongated scales covering their tails.

其他 Heterostracans 的头上有融合的板，尾巴上覆盖着菱形或细长的鳞片。

The first ones would be built on a relatively small scale, covering shorter journeys like Los Angeles to San Fransisco.

第一批将以相对较小的规模建造，涵盖洛杉矶到旧金山等较短的旅程。