turn this way and that

So think of it this way; turning off your lights Saturday night is all well and good - but remember that the work really starts when you turn them back on.

所以请用这种方式想想，在星期六晚上关掉你的灯非常的好——不过记住当我们又重新开灯的时候这个活动才真正开始。

This means that you can combine model elements of a given type into units that, in turn, you can use as the building blocks to be combined in the same way at the next level of abstraction, and so on.

这就意味着，你可以把一个给定类型的模型元素合并到单元里，依次类推，你可以用这种方式在下个抽象层面上进行合并，并把这些合并后的单元作为一个模块进行使用。

You turn at this corridor and half way down that hall you see a door labeled "Quiet Room".

你走上这条走廊，在离大厅还有一半路程时，你看到有一道门，上面写着“静室”。