出洋相
make a fool of oneself;make sb a laughing-stock; cut a miserable figure;make a sorry spectacle(or an exhibition)of oneself;blooper;gaffe
他又一次展示了他~的才华,在欢迎讲话中说:“您在17—1976年帮助我国庆祝了200周年。”7000名来宾中传出一阵笑声。He once again demonstrated his gift of gaffe in his speech,saying that “you helped our nation celebrate its bicentennial in 17—in 1976.”Laughter rippled through the crowd of 7000guests.