Waving a book in front of your face, you'll feel the air moving against your face.

在面前挥动一本书，你会感觉到空气在你面前流动。

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When the glasses arrived, the eye doctor put them on my face and walked me out onto the sidewalk in front of his office.

眼镜送到后，眼科医生把眼镜戴在我脸上，带我走到他办公室前面的人行道上。

youdao

Peek-a-boo (lower back): Lie face down on the floor using your outstretched arms to support baby in front of you.

躲猫猫（锻炼后腰）：脸朝下，用你伸展的胳膊支撑住你前面的婴儿。

youdao

The doctor says you should point the device so the flow of air is just in front of your face.

VOA: special.2009.07.14

He was motionless, all but for one finger that moved up and down in front of his face as if he were marking time with it.

他一动也不动，除了一根手指在他的面前上下摆动,好像在用它标记时间。

耶鲁公开课 - 1945年后的美国小说课程节选

Floor plans also observed feng shui: Stairwells, for example, don't directly face the front door, for ideal energy-flow.

WSJ: Romancing the Overseas Buyer��WSJ Mansion

The scientists found that parts of the spine thought to face the front of the animal, in fact faced the back - and vice versa.

BBC: Science & Environment

Unfortunately, to reap the benefits of the Optimal Light Therapy System, you have to spend 30 minutes with your face in front of a blinding, bright light.

CNN: STORY HIGHLIGHTS