Such programs,he says, could really help many developing countries that need this kind of device.

VOA: special.2010.06.29

Plato wrote the dialogues as a kind of learning device, as a tool to help the reader get better at doing philosophy.

柏拉图写下这些对话录,是为了将其作为一种助学方法,作为一种帮助读者,更好的掌握哲学的工具

耶鲁公开课 - 死亡课程节选

Here's a nice device, food blocker, if you need a little help.

这是一个很好的设备,食物阻挡器,它可以帮助你减肥

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选