You can do interval training once or twice a week (never two days in a row).

你可以做间隔锻炼一周一次或者两次（不要连续两天）。

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Lau said the current monitoring mechanism requires traders to keep records over the past 60 days so they can be checked at least once every two weeks.

刘女士说现行的监查机制要求商贩保存最近60天的交易记录，以供该署进行没两周至少一次的检查。

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You can also add one teaspoon of green leafy vegetable juice to your baby's milk bottle once in two days.

你也可以两天一次地加上一茶匙的绿叶蔬菜汁到你宝宝的奶瓶上。

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While 32, 000 people in a population of 1.5m have no running water, 100, 000 or so get water once in every two or three days.

ECONOMIST: The Gaza Strip: Not nearly back to normal | The

There's been a drop in kidnappings of ethnic Chinese businessmen -- the number has fallen from one every two days to once a week since Estrada took office.

FORBES: The Ronald Reagan of the Pacific

Once, he spent twenty-two days walking across Texas with nothing but a bedroll, a flashlight, and a rifle, from Big Bend, in the west, to Houston, where he was going to deliver a paper at a biology conference.

NEWYORKER: In the Air