So you may take this course ultimately via pass-fail or letter grade and I am more than happy to chat with you about the implications and to sign any paper work such as the stack here that you might need.

你可能希望这门课采用及格-不及格分制或者分数制,我很乐意跟你聊下,两个打分制各自的含义,也可以帮你在这里签到。

哈佛公开课 - 计算机科学课程节选

With one swipe, I can sign on electronic screen, get rid of paper completely.

刷一下，我就可以在电子屏幕上签字，完全丢掉纸质的收据。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选