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来源：雅诚德英语网
You might need an activity that does nothing at all, such as when you have a construction that requires an activity, but there is no work to be done.
您可能需要一个根本不执行任何工作的活动，例如，当您拥有一个需要某个活动的构造，但没有要执行的任何工作时。
You might need an activity that does nothing at all, such as when you have a construction that requires an activity, but there is no work to be done.
您可能需要一个根本不执行任何工作的活动，例如，当您拥有一个需要某个活动的构造，但没有要执行的任何工作时。