There are many stories about military dogs who have saved soldiers’ lives.

军犬拯救士兵的故事有很多v)7OHiy9=WJB。

However, dogs are not the only animals that have been trained for war.

然而，狗并不是唯一被训练作战的动物C_pl),YgOiA1b@222。

Many naval forces around the world use sea animals to help them detect danger.

世界上许多海军部队利用海洋动物来帮助他们探查险情w[p2yHzGDb6-。

The first military experiments with sea animals began in 1960, when the U.S. navy started to train dolphins to find submarines and underwater mines.

1960年人们第一次尝试用海洋动物来辅助作战，当时美国海军开始训练海豚来寻找潜艇和水雷I&a#W9I_W~sX]bY+c;p。

They chose dolphins because of their ability to use echolocation, which allows them to find objects in the dark.

他们选择海豚是因为它们有回声定位的能力，这使它们能够在黑暗中找到物体mqB%~;n]4h。

In 1965, the Soviet Union opened a research centre to train dolphin soldiers of their own.

1965年，苏联开设了一个研究中心，训练自己的海豚士兵L5&v~=+SSU2vLc0Eo。

Both the U.S. and Russia still train military dolphins today.

美国和俄罗斯至今仍在训练军用海豚%rsb@d]ZA@。

However, in 2012, the U.S. navy announced that they would eventually replace their dolphins with underwater drones.

但在2012年，美国海军宣布他们终将用水下无人机取代军用海豚RFuWr~CnUa=ubq=nAA。