Most historians are convinced there are one or two missing factors that you need to open the lock.

大多数历史学家认为，要打开这把锁还需要一两个缺失的因素。

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Of all the odd and unexpected consequences of divorce - missing kitchen utensils, kids with two sets of everything, a weird sense of sadness yet liberation - this is a new one.

在所有奇怪和出乎预料的离婚结果中，诸如厨具的下落不明、每件东西都有两套的孩子、虽已解脱却古怪的悲伤感中，这是个新的课题。

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This gene comes in two varieties, one of which has a part missing and therefore does not work properly.

这种基因有两种变体，其中一种由于缺失了一部分而不能正常工作。

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You always expect to have one or two missing each time you name a squad.

BBC: St Johnstone's Murray Davidson given Scots U-21 call-up

"We benefit from missing one or two upgrade cycles, " he says, citing the cost and hassle of installation and the toll on the mind.

FORBES: Magazine Article

Roughly 1 in 45 healthy Americans are carriers of the recessive trait, meaning they are missing one of the normal two copies of the gene.

FORBES: For Arya