So in this case for a safety plan, or even starting to get used on instrument panels, or navigational aids.

所以在这种情况下为了安全计划，或者甚至开始在仪表盘上使用，或者导航辅助设备。

Polynesian navigators managed voyages like this without the help of modern navigational aids.

波利尼西亚航海家在没有现代航海设备帮助的情况下完成了这样的航行。

But the sky also contains navigational aids much closer to Earth, the clouds.

但是天空也包含离地球更近的导航设备，即云。

First lit in 1870, Cana Island Light still serves as a navigational aid, though its antique glass lens is now automated and computer-controlled.

Cana Island Light 于 1870 年首次点亮，尽管其古董玻璃透镜现在已实现自动化和计算机控制，但仍用作导航设备。

But today I want to talk about the importance of stars for early seafarers, about how the fixed patterns of stars were used as navigational aids.

但今天我想谈谈星星对早期航海者的重要性，关于星星的固定图案是如何用作航海辅助工具的。