"To get back to the 1998 level of production, Venezuela would need to invest for the next 10 years to upgrade its petroleum operations.

VOA: standard.2010.08.06

O Right there, order n. So I have order n operations at each level in the tree. And then how many levels deep am I? Well, that's the divide, right? So how many levels do I have?

在这儿,所以我在树的每个层次都要做O的操作,那个这棵有多少层呢？,这是一个除法，不是吗？

麻省理工公开课 - 计算机科学及编程导论课程节选

"What we have found is that there is great and growing interest in greening the campus operations but what we are not seeing is a high level of interest around integrating sustainability in the classroom,".

VOA: standard.2009.12.08

Acknowledge that CEOs and their boards rarely receive good information on what takes place at the operations level within their companies.

FORBES

U.S.-based NGO Water for People is helping lead the charge in this area with the development of a new system called FLOW (Field Level Operations Watch).

CNN: Going with the 'FLOW' towards better sanitation

Paradoxically, if nuclear warfare represented the highest level of warfare, there developed at the lowest level covert operations.

FORBES: What Happened To The American Declaration Of War?