light tank

例句：

1. 1. The army used light tanks to advance through the battlefield.
   军队使用轻型坦克在战场上前进。
2. 2. The tank was so heavy that it could not be moved by its own weight.
   坦克太重了，它无法自己移动。
3. 3. Light tanks are often used in urban areas for transportation and security purposes.
   轻型坦克通常用于城市地区进行运输和安保工作。