Almost half — or 46 per cent — cleaned their keyboard less than once a month.
近半数的人(46%)一个月内不会清洗一次键盘。
Price list on their Web site is updated infrequently (less than once a month).
在其网站上的价目表不常更新（每月少于一次）。
Those using cell phones less than once a month increased the odds of being very tired one year later by 1.8.
每月(熄灯后)使用手机小于一次，就会使一年后非常疲劳的机率增加1.8%。
Make sure that the frequency for your outgoing mail is set to no more than once a week and no less than once a month.
确认你发邮件的频率，将其保持在不多于每周一次，不少于每月一次。
Grading records must be sent on a monthly basis to the International office or with each transaction if transactions occur less than once a month.
必须每月向OCIA总部递交达规判定记录，如果交易次数少于一月一次，则可与每次的交易记录一并递交ocia总部。
Most of them come home less than once a month, it has been calculated that the rest of the young people's time with their parents is about a month!
他们中的大部分人回家次数不到一个月一次，据统计，年轻人和父母相处剩下的时间不够一个月！
On the other hand, those eating more than once a week of Fried fish or fish sandwiches were 44 percent more likely to suffer ischemic stroke compared those who consumed less than once a month.
从另一方面来说，那些每周吃一次以上的油炸鱼或鱼肉三明治的人比每月吃不到一次油炸鱼或鱼肉三明治的人患缺血性中风的几率要高44%。
On the other hand, those eating more than once a week of Fried fish or fish sandwiches were 44 percent more likely to suffer ischemic stroke compared those who consumed less than once a month.
从另一方面来说，那些每周吃一次以上的油炸鱼或鱼肉三明治的人比每月吃不到一次油炸鱼或鱼肉三明治的人患缺血性中风的几率要高44%。
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