The rest of the energy savings comes from the solar units.
出自-2013年6月阅读原文
And most noticeable of all, there is the phenomenon of large urban and suburban high schools that have split up into smaller units of a few hundred, generally housed in the same grounds that once boasted thousands of students all marching to the same band.
出自-2012年6月阅读原文
英语六级真题
The greatest concern the authors raise is space debris一pieces of "junk" that orbit the earth, with the potential to cause serious damage if they collide with operational units, including the ISS.
2019年6月六级真题（第三套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-COUNT
单位；整体
If you consider something as a unit, you consider it as a single, complete thing.
A unit of measurement is a fixed standard quantity, length, or weight that is used for measuring things. The litre, the centimetre, and the ounce are all units.
N-COUNT
（课本）单元
A unit is one of the parts that a textbook is divided into.