但是，不要纠缠于负的，你有很多事要做，而且也没有时间来招待非生产性的想法。
But don't dwell on the negative; you have much to do and there's no time to entertain unproductive thoughts.
非生产性停留时间是有调中时和每车停时的主要影响因素。
Nonproductive detention time is the key ingredient that influences detention time of car in transit with resorting and the detention time of each car.
于此同时，我国很多港口的拥挤现象也越来越严重，导致船舶在港的非生产性停留时间很长。
At the same time, the crowding phenomenon in ports is also becoming increasingly serious, which leads to unnecessary nonproductive stay in port.
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