The captain knew that another attempt would be made later, for the sunken ship he was trying to find had been carrying a precious cargo of gold bullion.

　　Despite the message, the captain of the Elkor decided to try once more. The sea bed was scoured with powerful nets and there was tremendous excitement on board when a chest was raised from the bottom.

　　4. The captain knew that another attempt would be made later, for the sunken ship he was trying to find had been carrying a precious cargo of gold bullion.

　　船长知道日后还会再作尝试，因为他试图寻找的沉船上载有一批珍贵的金条。

　　语言点:make an attempt的意思是“努力”，sunken ship的意思是“沉船”，gold bullion的意思是“金条”。

　　5. Despite the message, the captain of the Elkor decided to try once more.

　　尽管船长接了电报，他还是决定再试一试。

　　语言点1:句子结构分析:despite引导让步状语，说明“一个前提条件是…(但是…)”。

　　语言点2:decide to try once more的意思是“再试一次”。

　　6. The sea bed was scoured with powerful nets and there was tremendous excitement on board when a chest was raised from the bottom.

　　他们用结实的网把海床搜索了一遍。当一只箱子从海底被打捞上来时，甲板上人们激动不已。

　　语言点1:注意powerful的本意是“有力的”，在此引申为“结实的”。

　　语言点2:scour相当于search completely，意思是“彻底搜索”;be raised from的意思是“被从…中捞起来”。