This paper introduces two mature sorting methods: bubble sort and selection sort, and points out that these sorting methods could be used to realize the two-direction sort.

介绍了两种较为成熟的排序方法冒泡法和选择排序法，指出这两种排序方法都可在原来基础上实现双向排序。

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The two-direction all - electrical gun control system reduces its weight by 40% , its volume by 30%, while its efficiency raised by 35% as compared with current tank gun control system.

该双向全电式炮控系统与现行的坦克炮控系统相比，重量轻了40%，体积减少了30%，效率提高了35%。

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They sprang away, stumbling over roots and among vines in the dark, no two plunging in the same direction.

他们撒腿就跑，黑暗中不时被树根和藤蔓上绊倒，朝不同的方向奔去。

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Tornadoes usually travel in a northeasterly direction with a speed of thirty-two to sixty-four kilometers an hour.

VOA: special.2010.05.11

As state troopers converged on the area, someone in a truck -- going the opposite direction on a two-lane road -- fired at two marked patrol cars.

CNN: 4 dead, including shooter, in central Pennsylvania

Under the naturalistic direction of two-time Obie Award winner Leigh Silverman, the atmosphere is informal.

WSJ: Review: 'The Call' is a touching adoption saga

The Portuguese seemingly blew a double helping of two-handed kisses in the direction of Barca fans as he walked off down the tunnel.

BBC: SPORT | Football | Europe | The battle of Stamford Bridge