演员们的表演很机械，未能吸引观众。

The actors gave a ___mechanical performance that failed to engage the audience.

他以一种缓慢、机械的方式完成日常任务，显得毫无兴趣。

He carried out his daily tasks in a slow, ___mechanical way, showing no interest.

缺乏热情，我们就有可能以纯粹机械化的方式工作。

Without passion, we risk doing our jobs in a purely ___mechanical manner.