机械人

例句：

1. 1. The robot has been programmed to perform various tasks.
   这个机器人已经被编程来执行各种任务。
2. 2. The mechanical engineer designed the new car's engine.
   机械工程师设计了这款新车的引擎。
3. 3. Mechanical engineering is a field that focuses on the design and construction of machines and systems.
   机械工程是一门专注于设计和建造机器和系统的领域。