12、In another sea-chest, which contained the belongings of a ship’s officer, there was an

unfinished letter which had been written on March 14 th ,1943.

在另一只箱子有装着一位海军军官的东西。有一封 1943 年 3 月 4 日未写完的信件。

本句的主干是In another sea-chest, there was an unfinished letter which had been written on

March 14 th ,1943.

Which(指代 chest )contained the belongings of a ship’s officer=there were the belongings of ship

officer in the chest

13、The captain learnt from the letter that the name of the lost ship was the Karen.

船长从这封信中知道这艘船叫卡伦号。

learn form 从……得知

The most valuable find of all was the ship’s log book, parts of which it (形式主语)was still

possible to read.

在所有打捞上来的东西中最有价值的是这艘沉船的航海日志。某些部分仍然能看清楚。

Which 在句中指代log book ，而it 是形式主语，句子可以变成 parts of the log book it was still possible

to read. 进而变成 it was still possible to read parts of the log book.