我们的学校坐落在城市的北面，它很大而且非常干净。
Our school is in the north of our city. It is very big and clean.
他对厨房非常讲究——每件东西都必须非常干净，而且要放在相应位置。
He's very particular about the kitchen — everything has to be perfectly clean and in its place.
核心代码很干净而且容易扩展，用户界面也非常容易使用。
The core code is clean and easy to extend, and the user interface is very easy to use.
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