Speak normal

How can you make something say on a Sonos or Google Home with a slight pause in between, so that it doesn’t play everything in one continuous tone?

Enter a dot maybe?
Else split the text up in 2 or more action cards, which you can trigger with a certain delay.
AFAIK there’s no sophisticated way to enter a pause.

Google Cloud Services app supports SSML.

That is indeed the solution, but unfortunately, I don’t have a credit card, and using ‘pause’ isn’t a solution either. You can only use it if you know exactly how long you want it to last, which, of course, isn’t the case