Point covering problem is hard to solve with great actual value.
点覆盖问题是一个重要的有实际意义的难解问题。
Set covering (basketball) problem
集合覆盖（篮球）问题
No problem. Ill have the covering L/C opened as soon as I get back.
没问题。我一回去，就马上安排开立有关信用证。
No problem. Ill have the covering L/C opened as soon as I get back.
没问题。我一回去，就马上安排开立有关信用证。
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