The defect happens when a baby's top lip or mouth doesn't form properly before birth.

这种缺陷是由于婴儿的上唇或嘴巴在出生前没有正常形成。

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When we look at a face or a picture, our eyes pause on one spot at a time, often on the eyes or mouth.

当我们看一张脸或一幅画时，我们的眼睛每次都停留在一个地方，通常是在眼睛或嘴巴上。

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She had to use her head or mouth to work together with hands to finish these actions.

她必须用她的头或嘴和手一起完成这些动作。

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Infection can spread through touching an infected surface and then touching your eyes, nose or mouth.

VOA: special.2009.07.14

The first words or first line out of his mouth or the first lines are " "it is customary," he says.

他开头的前几个字,或前几行是,他说：，“按惯例。

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Today we know, for example, if you can put one certain kind of element in your mouth or eat that, it doesn't necessarily mean you want to put the element next to it and your mouth as well, that might not be safe.

现在我们知道了，比如，即使你能把某一种元素放进嘴里,或者吃下去，这也并不一定意味着,你会把它邻近的元素也吃进嘴里,这可能会有危险，但。

麻省理工公开课 - 化学原理课程节选

And you can see those fans or mouth brushes, that's what it uses to collect food.

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Riding the subway and working in tight quarters are excellent ways to pick up the virus, particularly if you touch your face or mouth a lot.

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The panel also felt that specific types of helmets or mouth guards did not demonstrate any significant advantages and recommended players to make sure their helmets and mouth guards were well fitted and maintained in good working condition.

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