CLIVE HARRIS: Do you have any idea how many units are defective?

克莱夫·哈里斯：你知道有多少件有缺陷吗？

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It is very difficult to know exactly how many units there are in a glass of wine or measure of spirits.For this reason many health experts recommend women abstain completely throughout pregnancy.

不过要测量每次饮酒的量是非常困难的，出于这个原因，许多健康专家还是建议女性在怀孕期间完全戒酒。

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It is very difficult to know exactly how many units there are in a glass of wine or measure of spirits. For this reason many health experts recommend women abstain completely throughout pregnancy.

不过要测量每次饮酒的量是非常困难的，出于这个原因，许多健康专家还是建议女性在怀孕期间完全戒酒。

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It currently recommends But many experts,including Dr.Irwig, recommend adults take 1,000 to 2,000 units a day, an amount only possible to get though supplements.

VOA: standard.2010.05.28

They basically make many, many copies of their DNA and they make all of their viral proteins and they assemble into new viral units.

它们会生成不计其数的病毒基因拷贝,并翻译生成病毒蛋白,组装成新的病毒单位

耶鲁公开课 - 生物医学工程探索课程节选

Nokia is currently evaluating how many units it should prepare to ship at launch.

FORBES: Nokia to Take on Microsoft Surface with Windows RT Tablet

With more than 200 networks, many units are unable to swap e-mail and files.

FORBES: Scare Tactics

There are more than 200 networks, and many units are unable to swap e-mail and files.

FORBES: Scare Tactics