。
Can you stand Nagoya's summer heat?
Literal
Nagoya [possessive-の] summer [possessive-の] heat [object-を] endure can [polite-ますか].
我慢する ('to endure, put up with') is a culturally important verb — related to the concept of 我慢 (gaman), patient endurance considered a virtue. In potential form できる, it asks about the addressee's capacity to put up with something.