Even elite runners have a variety of styles. Some strike the ground with the heel, others with the midfoot. Some look elegant, while others look awkward and clumsy.

甚至跑步精英们有着各种各样的风格。一些人用脚后跟触地，另一些人则用中足触地。一些人看起来很优雅，而另一些人则显得笨拙。

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In the past year, the United States says it helped the Kenyan army develop a Ranger Strike Force, an elite counter-terrorism unit capable of conducting operations against infiltrators and armed groups.

VOA: standard.2009.05.01