Here they are testing different objects to see whether they sink or float, and why they sink or float.

他们正在测试物体的沉浮，以及讨论沉浮的原因。

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Here they are testing different objects to see whether they sink or float, and why they sink or float.

他们正在测试物体的沉浮，以及讨论沉浮的原因。

youdao