N . Half annual maintenance item and maintenance plan for conglutinating machine was failed to define as per requirements.

复合机的保养项目和保养计划没有按要求制定。

youdao

So I'm not going to worry whether this item is a vase or a watch or painting I'm just going to say it's the n'th element.

所以我不用担心这个物品,是花瓶还是手表或者油画,我只要说这是第n个元素就好。

麻省理工公开课 - 计算机科学及编程导论课程节选