名词
中文翻译：潜艇雷
同义词：
['underwater mine', 'torpedo mine例句：1. The submarine mine was a major factor in the battle.（潜艇雷是这场战役的主要因素。）']
例句：
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1. The submarine mine was a major factor in the battle.
潜艇雷是这场战役的主要因素。
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2.They used to launch underwater mines at night to protect their ships.
他们过去在晚上发射水下雷来保护他们的船只。
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3. The submarine mines were set off by remote control, making it difficult for enemy ships to detect them.
这些水下雷是通过遥控设置的，这使得敌人船只很难发现它们。