"菜鸟级错误"用英语怎么说?

rookie mistake:低级错误,菜鸟级错误

rookie:a person who has just started a job or an activity and has very little experience 新手;生手

a rookie police officer 新来的警员

其他关于"新手"的表达:

newbie:a person who is new and has little experience in doing something, especially in computing novice (尤指计算机方面的)新手

A list of search engines would be useful for newbies like me. 一系列搜索引擎的清单将有助于像我这样的新手.

greenhorn:生手;不懂世故的人

That greenhorn is still wet behind the ears. 那个生手毫无经验.

a person who is new and has little experience in a skill, job or situation 新手;初学者

I'm a complete novice at skiing. 滑雪我完全是个新手.

computer software for novices/the novice user 给初学者设计的电脑软件

green: young and lacking experience 不成熟的;缺乏经验的;幼稚的

The new trainees are still very green. 这些受培训的新学员还很不成熟.