per·force /pəˈfɔːs/ ad. | n.I ad. 1. 必须，只得；必定 He stood up, and they perforce stood up with him. 他站起身来，他们只好同他一起站起身来。 Much of what is said about ancient men is, perforce, guesswork. 关于古代人的许多说法必然只是猜测。 2. 〈废〉强行地，强迫地 II n. 必须；必定 [< OFr par force by force]