他总是愿意谈论各种假设的可能性。He was invariably willing to discuss the possibilities hypothetically.这只是一种假设的可能性.It's only a theoretical possibility.我会质疑那个假设的正当性.I would question the validity of that assumption....

“假设的”的英语可以翻译为：[法] fictitious，hypothetical，assumptive，given，hypothetic ...