1. 轮机舱
On a boat or a ship, the engine room is the place where the engines are.

2. （组织、机构等的）最重要部分，最有影响力部分
If you refer to something as the engine room of an organization or institution, you mean it is the most important or influential part of that organization or institution.

1. a room (as on a ship) in which the engine is located

Synonym: engineering