1、一次的英语单词是：once。
2、我每天至少要把厨房地板擦洗一次。I have to mop the kitchen floor at least once a day.
3、这些数据应该每星期更新一次。The data should be updated once a week.
1、一次的英语单词是：once。
2、我每天至少要把厨房地板擦洗一次。I have to mop the kitchen floor at least once a day.
3、这些数据应该每星期更新一次。The data should be updated once a week.
