Pacemakers may be permanent or temporary.

VOA: special.2010.06.29

So the proposal that death is a matter of permanent cessation of P-functioning versus temporary, that doesn't seem like it's going to do the trick.

所以说死亡只永久地,停止人格功能性的这个说法，也不是正确的。

耶鲁公开课 - 死亡课程节选

It's a mix of kind of permanent exhibitions and some temporary ones which come and go.

这里混合了长期展厅和不时更换的临时展厅。

一眼看历史 - SpeakingMax英语口语达人