Is this translator in your organization?
Do you mean you want to let translator dial in Teams meeting?
At present. I still confused about why you want to have one meeting with two audio conference bridges.
In my understanding, audio conference bridge has two types of audio conferencing phone numbers. If translator is in your organization, you can set the phone number in conference bridge and a caller can use any of the phone numbers that are assigned to your conference bridge to join a meeting.
For more details, you can refer to: