I'm probably going to end up in a crater because karma just plays it so. But I will venture out and say, even the slightest doubt on any radio transmissions and I will without fail ask for clarification in plain English if need be to ensure there is no discrepancy or doubt.
In a globalized world where we mingle with diverse cultures, miscommunication is a distinct and present threat we have to recognize and mitigate.
I have quite evidently annoyed local ATC at the end of a 12 hour duty day at 10am for repeated confirmations just because that particular situation warranted it. It is theirs and my job to ensure we get down safe. No matter what the perceived annoyances.