在Google出现后的时期，深层次的归档资料看起来越来越像那些早期探险者手中的航海图，上面的一些空白处被标上“此处危险”的记号。

In the A.G. era, the deep archive is looking more and more like those charts used by early explorers, with whole blank regions labeled "there be dragons".

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这地图的重要价值在于实用性，填补了在中国航海图一些空白。

Its value lies in its practicability, and it fills several gaps in the field of China's nautical charts.

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