可惜，当后备箱盖弹开时，里面是空的。

Sadly when the lid of the boot sprang open, it was empty.

《柯林斯英汉双解大词典》

这树干里面是空的。

The tree trunk was hollow inside.

《牛津词典》

剧院几乎是空的。

The theatre was practically empty.

《牛津词典》

It just frees up space on the screen for more content and that may very well be a reasonable decision.

用来空出一些空间来显示更多的内容,那可能是一个非常合理的决定。

哈佛公开课 - 计算机科学课程节选

And he has left blanks here, question marks here and says it is advantageous to put them in rows and to form a table.

他左边栏是空的，还有问号，他认为,将元素以行列排成一个表格是很有好处的。

麻省理工公开课 - 固态化学导论课程节选

So what O'Connor does, is she presents a sense of the world imbued with structure and meaning, but a structure and meaning that looks essentially blank.

所以奥康纳所做的是，呈现一个充满了构架,和实义感的世界，只不过这些构架和实义,看起来完全是空无一物的。

耶鲁公开课 - 1945年后的美国小说课程节选