1、twice：adv.两次; 两遍; 两倍;

2、[例句]He visited me twice that fall and called me on the telephone often.那年秋天他来看过我两次，而且经常给我打电话。

3、I phoned twice a day, leaving messages with his wife.我每天打两次电话，托他妻子捎口信。