某欧洲环保组织最近的抽样调查发现，地中海漂浮着超过2500亿颗的塑料微粒。

Upwards of 250 billion microscopic pieces of plastic are adrift in the Mediterranean, recent sampling by a European environmental group suggests.

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因此，我们致力于将液体中的细胞漂浮于某些物体上可以精确的组织出像肾脏这样的结构。

So we are working on how you turn cells floating about in liquid into something as precisely arranged as a kidney.

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有时微小脂肪栓子能在大体标本中被识别。方法是将新鲜组织薄片浸入盐水中，再轻轻压迫组织，则脂肪小滴释出并漂浮到水面。

Sometimes the microemboli can be identified in the gross specimen by gentle pressure on fresh tissue slices immersed in saline, which releases the droplets and permits them to float to the surface.

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