army 陆军，军队，大群，大军

例句：Kenny is too old join the army.

肯尼超过了参军的年龄。

navy n. 海军

例句：Before his retirement from the navy, Paul was a commander.

从海军退伍之前。保罗是个中校。

naval adj. 海军的

例句：Finally, the naval warfare ended in our victory.

最终那次海战以我们的胜利而告终。

navigation n. 航海，航空，导航，领航，航行

例句：Navigation is difficult on this river because lots of hide rocksexists.

因为有很多暗礁，在这条河上航行很困难。

marshal n. 元帅，典礼官，执行官v. 整顿，配置，汇集，排列

例句：Jason was supposed to act as the marshal's aide.

约翰逊的职责是元帅的副官。

marsh n. 湿地，沼泽，沼泽地

例句：It is very dangerous to be alone in the marsh.

一个人在沼泽地里是很危险的。

military adj. 军事的，军用的

例句：The citizens demanded that military spending should be decreased.

市民要求军费应该减少。

militant adj. 好战的，积极从事或支持使用武力的

例句：A few militant members of the crowd attacked the vendor who soldfake antiques.

人群中几个好斗的人攻击了那个卖假古董的小贩。

troop n. 群，组，多数，军队vi. 群集，结队vt. 把（骑兵）编成骑兵连

例句：The troop made their retreat from the occupied city.

部队从沦陷的成市安全撤出。