上一次H1N1全球流感爆发是在1918年，它与同年爆发的其他传染病也就是悄然传播开来的。
上一次H1N1型流感爆发是在1918 - 20年，当时的西班牙流感夺去了大约五千万到一亿人的生命。
The last pandemic caused by an H1N1 strain was in 1918-20, when Spanish flu took an estimated 50m-100m lives.
双臂摆举动作和硬摆举动作完全一样，只是在后摆阶段要使用弹性能量来制造立即让壶铃上摆以进行下一次动作重复的爆发力。
The two-arm swing is exactly the same as a dead swing except that at the back of the swing you use the elastic power generated to immediately explode the kettlebell up for another rep.
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