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A comment on It’s hard work to make ordering groceries online so easy. Parent comment

Re:It’s hard work to make ordering groceries online so easy by midasuni on Tuesday June 15, 2021 @05:32PM (#27521784)
I think NYCs metro only works 24/7 because there’s enough 4 track to allow two tracks to close for maintenance overnight. If you don’t close a stretch of track how do you maintain it?
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