As recently as five years ago, US migration was twice the rate of European Union states.

就在5年前，美国的移民率还是欧盟国家的两倍。

youdao

Black teenagers have an unemployment rate of 44 percent, twice the rate for white teens.

十几岁的黑人失业率达到44%，是同年龄段白人的2倍。

youdao

The tiny muscle beats about 100-150 times per minute-twice the rate which your heart beats.

小肌肉每分种约跳动100——150次——你自心跳频率的两倍。

youdao

Across Russia fires are running at twice the rate of normal.

VOA: standard.2010.07.23

Okay.So that's all you got to do, and you can hear the holding for twice as long as the other, so you got irregular rate of harmonic change.

好的，现在需要大家做的都弄好了，而且大家可以听到比别的要长两倍，这就是泛音的不规则变化率。

耶鲁公开课 - 聆听音乐课程节选

Ten years ago the rate was almost twice that. Today's rate is six percent, putting Cambodia well on its way to hitting its target.

VOA: standard.2009.11.10

But the female prison population is growing at twice the rate of their male counterparts.

FORBES: Magazine Article

In 2008 they voted for Mr Obama at twice the rate of white Christians.

ECONOMIST: Inside the corridors of power, there we sat down and wept

Two out of every three black marriages fail, about twice the rate of white marriages.

ECONOMIST: Unmarried black women