But Galileo already managed to find examples where things would roll on for a very, very long time.

但伽利略已经成功找到了,物体可以运动很长很长时间的例子

耶鲁公开课 - 基础物理课程节选

See this happens every semester that the chuckles, the grimaces, kind of roll through the crowd as people catch on, but there you go.

每学期学生们看到这，就会偷笑或者做鬼脸之类的，不过你们随意。

哈佛公开课 - 计算机科学课程节选