engine body

例句：

1. 1. The engineers are responsible for the design and construction of the engine body.
   工程师负责设计和建造发动机主体。
2. 2. The new car has a sleek and modern engine body.
   这款新车拥有光滑现代的发动机主体。
3. 3.Engineers must ensure that all parts of the engine body are properly assembled and functioning.
   工程师必须确保发动机主体的所有部件都正确安装并正常工作。