A couple of days before our speeches were due, I had the bright idea of going to the local branch of the Humane Society and borrowing a puppy to use as a sort of a visual aid.

演讲前最后几天，我有了一个好主意，准备去当地动物保护协会分会借一只小狗，作直观教具用。

youdao

With the aid of visual and aural warnings, these safety enhancements use software, cockpit displays and related devices already installed on aircraft to alert pilots about potential mistakes.

WSJ: Honeywell Tests Autopilots for the Tarmac