在灾民安置点内，每隔大约300米需要修建一条宽50米的防火道(一个没有任何建筑物的区域)。
Within a displaced persons camp, build a firebreak (an area with no buildings) 50 m wide approximately every 300 m of building area.
在灾民安置点内，每隔大约300米需要修建一条宽50米的防火道(一个没有任何建筑物的区域)。
Within a displaced persons camp, build a firebreak (an area with no buildings) 50 m wide approximately every 300 m of building area.
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