每天 every day一个月二次 twice every month一天三次 three times a day / three times every day一年一次 once every year / once a year一天一到二次 once or twice every day / once or twice a day一个星期三四次 three or four times every week / three or four times a week 多久一次 how often……结果 result of
温馨提示:答案为网友推荐,仅供参考