1.The plane looped the loop then disappeared into the distance.

1.飞机翻了跟头，然后消失在远方。

2.The airman looped the loop three times and won the cheer in chorus from the spectators.

2.飞行员连翻了斗获得了观众们的齐声喝彩。

3.Taking the supplying regions as rows of the bigraph, the optimum scheme for looped grids feeder arrangement with minimum cost is obtained by a minimum weight match algorithm of bigraph.

3.联络线的建设费用最小为目,将各供电分区作为偶图的2列,采用最小权匹配算法得到"手拉手"环状网的最优配对结果。