这标志着连续6个月的净买入，尽管前几个月的购买量小得多。

It marks the sixth straight month of net purchases, though the previous months 'buying was much smaller.

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空气排净的标志是，排气孔中出来的全部都是水。

Sign of the net emission of air is vent out all the water.

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但它同时又是路侧障碍物的一种，路侧净区内的标志柱对驶出路外的车辆是一个潜在的危害。

Meanwhile it is a kind of obstacles on roadside and it is a potential endanger to the run-off-road vehicles.

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