dumbfoundKK [ˋdʌmfaʊnd] /ˈdʌmfaʊnd/发音动词1使目瞪口呆、使惊愕、令人哑口无言常用被动The sudden apology from her boss dumbfounded everyone in the office.老板突然道歉,让办公室里的人都目瞪口呆。用这个字练口说→