姑娘们在练习徒手搏斗。

Girls were practising unarmed combat.

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研究者认为，这是因为左撇子在徒手搏斗中更容易生存下来。

The cause for this, the researchers suggest, is that left-handers are more likely to survive hand-to-hand combat.

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这些士兵花了几个月时间，以把体型训练成一生中最棒的，学习徒手搏斗，枪法，小组战术以及其它一些技能。

These soldiers have spent months getting into the best physical shape of their lives, and learning such things as hand-to-hand combat, marksmanship, small unit tactics and a variety of other skills.

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