1·Republicans claim businesses aren't hiring because they're uncertain about regulatory costs, or their taxes are too high, or they can't find the skilled workers they need.
共和党人声称企业不再招聘处于对调节性支出的不确定，税收太高和无法招聘到他们所需的技术工人。
2·Recent studies of immune tolerance have focused on the role of a subset of t cells, called regulatory t cells (Tregs).
关于免疫耐受的近期研究集中在一种称为调节性T细胞(Treg)的T细胞亚群的作用。
3·Immunologists now recognize a four-point response system of helper t cells: Th 1, Th 2, Th 17 and regulatory t cells.
免疫学家现在认识到了辅助性T细胞(以下代号th)的四点反应系统：Th 1, Th 2, Th17和调节性T细胞。
4·What exactly is wrong with the genes in these regulatory t cells? What are they doing that they shouldn't be doing?
那在调节性T细胞中这些基因具体出什么问题了？它们产生了什么不该产生的作用？
5·Summary: The potency of regulatory t cells is impressive, but unexplained.
总结：调节性T淋巴细胞的效能值得注重，但尚无法解释。