Nowadays our short-term memories are just being underused.

如今，我们的短期记忆没有得到用。

Doctors say that drug is underused.

医生说，这种药物没有得到用。

The third point is that governments are underusing fiscal policies in healthcare.

第三，府在医疗保健方面没有用财策。

He argues that short-term memory pathways will start to deteriorate from underuse if we overuse technology.

他认为，如果过度使用科技，我们就无法使用短期记忆通路，最终造成其退化。