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。

youdao

"In the group of kids I taught two weeks ago," Randa explains, "one had a brother who was missing, another lost a cousin, and another had a relative who died in Qaddafi's shelling."

Randa解释道，“我两周前开始教这组孩子，一个孩子的哥哥失踪了，一个孩子的表兄丧生了，还有一个孩子的亲戚在卡扎非的炮轰下丧生了。”

youdao

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。

youdao

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