约分英语

用date就可以可以指会晤 we made a date to go to opera.我们约好去看歌剧.也可以指和异性朋友约会 I have a date with my girlfriend tonight.我今晚和女朋友有个约会.也可用过名次,(异性的)约会的对象 My date is meeting me at seven.我的对象7点和我见面.另外appointment也有与某人约会,预约的意思.

reduction of a fraction

counteract

cancel out