Alan Barrett of the University of Texas says travel by carriers of influenza, be they people in aeroplanes or birds on the wing, means regional mutations quickly spread around the world.

德克萨斯大学的阿兰·巴瑞特说，流感通过载体的传播就像是人们坐飞机或是鸟儿飞翔一样，意味着区域变异会很快传播到世界各地。

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The Bird spread its wing.

鸟伸展翅膀。

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So it is very important to study the parameters of the pass and techniques for the spread of the wing plate steel.

为此，定量研究孔型和工艺参数对翼板钢宽展的影响十分重要。

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Notice the truncated upper wing of the spread.

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Rob Howley brilliantly reclaimed his own kick ahead and the ball was spread left for wing Craig Morgan, who had an earlier score disallowed for offside, to race in at the flag.

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