ARTHUR was taken to the huge mediaeval fortress at the harbour's mouth.

亚瑟被带到海港口的巨大中世纪堡垒。

Sharply ordering Arthur to jump in and lie down, he seated himself in the boat and began rowing towards the harbour's mouth.

厉声命令亚瑟跳进去躺下，他坐进小船，开始向港口的入口划去。