留有余地 [- - yú dì]leave adequate leeway; allow for unforeseen circumstances; allow for unpredictable circumstances and needs; leave an appropriate margin for unforeseen circumstances; leave plenty of scope for; leave room (for further action); leave [allow] some leeway:
•¶ 我们安排工作时要留有余地。 When arranging our work, we should allow for unforeseen circumstances.