occasionally; now and then偶然地;有時 I went swimming on occasion in summer. 夏天我有時去遊泳。 I meet him on occasion at the club or in the theatre. 我在俱樂部或戲院裡有時能遇到他。 On occasion we feel like celebrating and have a party. 我們有時喜歡來個聚會慶賀一番。