How long does it last?

这要持续多久？

How long does it last on its batteries?

它的电池可以维持多久？

This made us question; how long does garlic last in our mouth, particularly the odor it brings?

我们不禁要问：大蒜在我们口中会残留多长时间，特别是它的气味？

That doesn't mean that banner ads haven't been lucrative for some publishers who place them on their sites -- but it does call into question how long that sort of advertising will last.

它并不是说广告条对刊登它的广告发布商无利可图，但它不禁让我们怀疑这种广告还能维持多久。

How long does the Aroma Reed Diffuser Oil last? How do I storage it?

无火香薰挥发精油的保质期是多久？存放条件怎样？