Can you float on your back?

你能仰浮吗？

《牛津词典》

If it's a stomach cramp, lie on your back, spread your arms and legs, and float until you can swim back to shore.

如果是胃痉挛，那平躺，伸展四肢，漂浮于水面直到你能游回岸边。

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Lie on your back and float on those waves while they lull you to a peaceful sleep.

躺在海面上随波逐流，海浪的舒缓会使你安然入睡。

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"They served us with smiles, and served us in ways that are truly unthinkable, the things they had to do for us, yet they did it with smiles, " said passenger Joy Dyer, wearing a Triumph bathrobe with "Float Trip 2013" scrawled on the back.

CNN: Cruise ship investigation under way