a.

1. 机械的，用机械的[Z]
   They were using a mechanical shovel to clear up the streets.

   他们用机械铲土机清理街道。

2. 似机械的，呆板的，无表情的，无意识的
   Blinking is a mechanical action of the eyelids.

   眨眼是眼睑的无意识动作。

3. 机械学的，力学的；物理的
4. 手工操作的，技工的
5. 技巧上的，细节上的

adj.

1. working or produced by machines or machinery.
   ▸relating to machines or machinery.
2. lacking thought or spontaneity.
3. relating to physical forces or motion.
   ▸archaic (of a theory) explaining phenomena in terms only of physical processes.

n.

1. (mechanicals) the working parts of a machine, especially a car.
2. archaic a manual worker.