One-twelfth of the students felt eye sore because of reading under too strong or too dim light.

十二分之一的同学因为在强光下看书，在弱光下看书而眼睛疼痛。

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Astronomically speaking, the twelfth house is that one-twelfth sector of the local sky just above the eastern horizon (see above picture) occupied by planets during the two hours after they rise.

从天文角度来说，第十二宫指当行星从东方地平线上升起后两小时内所占据的、当地天空中的十二分之一的区域(如上图)。

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It uses so much energy producing the slimy mucus and crawling over it that a mouse traveling the same distance uses only one twelfth as much energy.

它产生粘稠的黏液并在黏液上爬行消耗了大量的能量，而一只老鼠移动同样的距离只消耗了十二分之一的能量。

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The National Aeronautics and Space Administration, NASA, launched Columbia from Kennedy Space Center on April twelfth nineteen eighty-one.

VOA: special.2011.07.27

Just before sunrise on April twelfth, eighteen sixty-one, the first shot was fired in the American Civil War.

VOA: special.2009.08.13

On April twelfth,nineteen sixty-one, Soviet cosmonaut Yuri Gagarin flew in space for one hundred eight minutes.

VOA: special.2011.05.15

But Accelrys now books one-twelfth of the sale in the month the product is shipped and another one-twelfth each month.

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One-twelfth believe they have seen ghosts or demons.

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