core tank

例句：

1. 1. The engineer carefully removed the core tank from the engine.
   工程师小心翼翼地从引擎中取出了核心油箱。
2. 2.The maintenance crew replaced the core tank with a new one.
   维修团队用一个新的核心油箱替换了旧的。
3. 3.The tank was filled with fresh water to ensure that the core remained stable.
   水箱被注满了清水，以确保核心保持稳定。