如果航行穿过北极不比穿过任何其它地方花费更多，那将是相称的：每一次航程的节省将是巨大的。
If it cost no more to sail through the Arctic than anywhere else, yes: the savings per voyage would be huge.
这比以往任何一次单人航海的最远航程多一倍多。
This was twice the distance anyone had previously sailed alone.
这比以往任何一次单人航海的最远航程多一倍多。
This was twice the distance anyone had previously sailed alone.
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