We're able to think about the farthest reaches of the universe and ask what our place is in the universe.

我们可以思考宇宙最远的可到达处,并问我们在宇宙中的位置是什么。

耶鲁公开课 - 死亡课程节选

Another subset of T-cells called T helper cells will recognize that signal by direct contact with it, and they will become activated and proliferate.

另外一个T细胞的亚群是辅助性T细胞,辅助性T细胞可识别与其接触的抗原信号,并被激活,开始增殖

耶鲁公开课 - 生物医学工程探索课程节选