Signs and Symptoms include: If you have ectropion, your lower lid pulls away from your eye and tears don't drain properly into the puncta.

如果你患有眼睑外翻，睑缘会离开眼球，泪水不能正确眼窝。

It was often clustered in specific puncta, maybe 1 to 20 distinct spots per cell located both inside the cell and right at the plasma membrane, likely where it's functionally active.

这些蛋白质通常聚集在特定的点状结构中，每个细胞内可能存在1到20个不同的斑点，既位于细胞内，也恰好位于质膜上，这很可能其功能活跃的所在位置。

I have plenty of ideas and facts, you know, and I can see he is just the man to put them into shape—remembers what the right quotations are, omne tulit punctum, and that sort of thing—gives subjects a kind of turn.

我有很多想法和事实，你知道的，我看得出来，他它们付诸实践的人——记住什么正确的引文，omne tulit punctum，诸如此类的事情——给主题带来了某种转变。

In 3D, they can see PD-1 and PD-L1 molecules clustering together into distinct focal points, or puncta, specifically and only at the interface where a PD-1 positive T cell was physically touching a PD-L1 expressing cell, like a dendritic cell in their example.

在三维空间中，研究人员能够观察到PD-1与PD-L1分子聚集形成独特的焦点，即“点状结构”，这些聚集点特异性且仅出现在PD-1阳性T细胞与PD-L1表达细胞（如他们实例中的树突状细胞）物理接触的界面处。