In nineteen seventy-three,Alice Walker placed a marker in Fort Pierce,Florida, where Hurston is believed to be buried.

VOA: special.2009.02.22

We've learned how to identify and catalog cells according to the composition of proteins on the surface and those proteins that distinguish a cell are often called marker proteins.

我们学会了如何按照表面的蛋白成分,来识别并分类细胞,而这些用来区别细胞的蛋白,通常称为标记蛋白

耶鲁公开课 - 生物医学工程探索课程节选

Suppose that there were some sort of genetic marker and, although we didn't have a tattoo that you would just have to look at, -- but you could have genetic counseling-- have your DNA examined and you could tell, if you had the DNA testing, how much time you had left.

假设有某种基因标记，虽然我们没有,让你不得不去看的在身上的标记了，但你可能会去做基因咨询-,检查你的DNA，如果你做了DNA化验的话，你就能知道自己还剩多少时间。

耶鲁公开课 - 死亡课程节选