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1·Their father was very big in the army.

他们的父亲在军界很有威望。《柯林斯英汉双解大词典》

2·A captain in the navy ranks above a captain in the army.

海军的captain（上校）军衔比陆军的captain（上尉）高。《牛津词典》

3·The book goes on to describe his experiences in the army.

本书继而描述了他在部队的经历。《牛津词典》

4·You serve in the army for a few years, and when you retire, you get a US military subsidy.

你先在军队服役几年，当你退役的时候，你就能获得美国军队的补贴。

5·Her husband is in the army.

她的丈夫在陆军服役。《牛津词典》

6·He served as a captain in the army.

他曾是一名陆军上尉。《牛津词典》

7·He signed on for five years in the army.

他签了在部队服役五年的合同。《牛津词典》

8·He is in the army.

他在军队服役。《牛津词典》

9·His father is a staff sergeant in the army.

父亲是一名陆军上士。《柯林斯英汉双解大词典》

10·Robert was eager to talk about life in the Army.

罗伯特渴望谈论军旅生活。《柯林斯英汉双解大词典》