My uncle gathered over 100 volunteers to build an underground air-raid shelter for this village.

我四叔就召集了一百多个义工为这个村庄盖了一个地下防空洞。

The speech given by pauen in the bbc tv news disproved what the american officials have claimed that this air-raid shelter was a camouflaged military bunker .

鲍恩在英国广播公司电视新闻发表的这番讲话，反驳了美国官方所声称的这个防空洞是一个被伪装的军事掩体。

The breeding technique of increasing generations for winter wheat sown in summer using cool conditions of an air-raid shelter were studied for 5 years in 1984—1988.

1988年利用本校防空洞夏季冷凉条什进行冬小麦复播加代，经五年探索获得成功，实现了冬小麦就地一年三代的快速育种。