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But the unemployment rate has also topped double digits for the first time in 26 years.
VOA: standard.2009.12.15
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The bill was passed, and within five months after the bill was passed, we had double digit unemployment for the first time.
法案顺利通过，法案通过后五个月，失业率就达到了两位数,是史上第一次。
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So it's very important to be keeping in mind that any time you see a double bond, you have a pi bond there, so you're not going to see any rotation around the bond axis.
所以你们要记住,任何时候你们看到一个双键，这里面有π键，你们不会看到关于键轴的任何转动。
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And this time it did not subside, it never fall below double digits for the entire remainder of the decade of the 30s.
这次失业率没有下降，再也没有下降到两位数以下,20世纪30年代余下的时间也没有。
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It's just this double bind of vocation that's the subject of Sonnet VII, "How soon hath Time." That's the sonnet in which Milton laments the fact that he has turned twenty-three years old and has yet produced nothing that would indicate a shining poetic future.
第七篇十四行诗的主题就是这种职业窘境，“时间过得多快啊，“弥尔顿在这首诗里表达了,对自己都快23岁却没创作出什么,可以显示出他卓越天赋的诗的哀伤。
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And the mathematics of that equation involved a double derivative in time of x 0 plus some constant times x equals zero with some constraints on it.
那个数学方程式,包括了x对时间的二阶导数,加上常数乘以x等于,还有一些限制条件。
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DNA is a double helix, you know this, the double helix was--the structure of DNA was discovered about the time that I was born you've always lived with it.
NA是双螺旋结构,众所周知,DNA的这种双螺旋结构,是在我出生的那个年代才被发现的,它就是你生命的一部分
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And now we get the p orbitals, remember we want to fill up 1 orbital at a time before we double up, so we'll put one in the 2 p x, then one in the 2 p z, and then one in the 2 p y.
我们到了p轨道，记住在双倍填充之前,我们想要每次填充至一个轨道，所以我们在2px填充一个然后2pz填充一个，然后2py填充一个。
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Now the nice thing about this is that the degradation mechanisms seem to persist for some period of time, beyond the time at which you deliver the double stranded RNA; whereas, obviously, this mechanism here is only going to exist for as long as the anti-sense sequence is present.
而好消息是降解过程会持续一段时间,比你转入双链RNA的时间要长,但是,这种机制只会在,有反义链的时候发挥作用
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