jet-core region

例句：

1. 1.The jet-core region is where theengines of the aircraft are located.
   喷气核心区域是飞机引擎所在的地方。
2. 2. The jet-core region is responsible for providing thenecessary thrust to propel the aircraft forward.
   喷气核心区域负责提供必要的推力，使飞机向前推进。
3. 3. The jet-core region is a critical component of theaircraft's design and operation.
   喷气核心区域是飞机设计及运行的关键部分。