const n = num.length;
1990年，在《滴水穿石的启示》一文中，习近平同志这样写道：
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Michael Carrick has hinted that Harry Maguire will be offered a new deal with Manchester United and believes “there’s a lot more to come” from the defender.
"Do it slowly, do it right but let's get on with it," she said. "We have been stagnating at these very low recycling rates for far too long."