When baby is lying on his front, hold something so that he has to raise his head to see it.

当宝宝趴着时，抓一样东西逗他，这样他就得抬起头来才能看到。

《柯林斯英汉双解大词典》

She was lying on her front.

她俯卧着。

《牛津词典》

Suddenly, I saw a gold chain lying on the sidewalk in front of me.

突然，我看到了一条金链躺在人行道上在我的前面。

youdao

Ye were having to watch it as well how yer body went, lying on yer front, if it was wee bits at a time ye were moving.

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