Online security cameras, intelligent lighting and a wealth of sensors that control both temperature and air quality are offering an unprecedented level of control, efficiency, and improvements to what were once classed necessary costs when running a busin
2017年12月六级真题(第二套)阅读 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
班级;班
A class is a group of pupils or students who are taught together.
If you say that someone such as a sports player or a performer is a class act, you mean that they are very good at what they do.
PHRASE
独领风骚的;独一无二的;出类拔萃的
If someone is in a class of their own, they have more of a particular skill or quality than anyone else. If something is in a class of its own, it is better than any other similar thing.