让我们来仔细探究一下：1845年，31岁的乔·胡克尔已经有了11年的军龄。

In 1845 Joe Hooker was 31 years old and had been serving in the army for 11 years.

youdao

玛丽：我知道一些。首先你要介绍自己的基本情况，像名字、军龄、性别和专业等等。

Mary: I just know a little. First you need to include your basic information, such as your name, age, gender and major, etc.

youdao

首先你要介绍自己的基本情况，像名字、军龄、性别和专业等等。

First you need to include your basic information, such as your name, age, gender and major, etc.

youdao