easier said than done 说起来容易做起来难；说时容易做时难

【例句】
This is all a lot easier said than done, and a sophisticated computer AI will punish you for tactical errors.
说起来容易做起来难，一个狡猾的AI会捕捉并惩罚您的每一个战术错误。

You want me to come to work at 6:00 AM? Easier said than done！
想让我6点就开工？说得容易！