After a half-century,the search for extra-terrestrial intelligence, or SETI, has pretty much come up empty.

VOA: standard.2010.04.16

And as I followed many of the students after they graduate, whether the students who work with me here as undergrads or students who I tutored, when I followed the path,it wasn't just empty words.

据我了解，很多学生毕业后，无论是与我一起工作,还是我辅导的学生，当我了解他们的前路，并不是些空话。

哈佛公开课 - 幸福课课程节选

Here I'll initiate the memo to be 0, or to be empty, rather, the dictionary.

在这里我会将memo初始化为，或者为空，作为记录字典。

麻省理工公开课 - 计算机科学及编程导论课程节选

(SAYING) On the southern coast - known as the Costa del Sol - block after block of apartments lie empty or half finished, many of them designed for foreign buyers who have long since abandoned the idea of investing in Spain.

VOA: standard.2010.06.24