What's more, they should be covered.
而且要把它们盖住。
One of the clichés of pair programming is that if you're doing this method right, your screen should be covered with greasy finger-marks by the end of the day.
结对编程的特征之一就是,如果你正确地使用了这种方法,那么在一天结束的时候,你的屏幕上应该会沾满油腻的手指印。
White boards: The room should be covered with whiteboards.
白板:房间应布满白板。
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