The best way to describe this paragraph on Yahoo! Shine is awkward. And wrong:
If a motion censor detects your presence, it’s gonna stop you in your tracks. Of course, it might take the use of a motion sensor to detect your presence, which might pass the info on to the censor.
There’s no need for the hyphens here:
Hyphens are used in expressions like “13-year-old,” but not “13 years old.” It’s like the difference between writing “2-foot-long snake” and “a snake 2 feet long.”
I’m pretty sure if the man was proposing, he’d have an engagement in his pocket. But I could be wrong: