Believe it or not,   the answer might lie in a flatpack sofa.

信不信由你，答案可能就在平板沙发上。

We built a flatpack sonar search vessel on a beach in 1981, patrolled up and down the loch.

1981 年， 我们在海滩上建造了一艘平板声纳搜索船，在湖中上下巡逻。