一周一次或两次 Once a week or two ; Once or twice a week
两个一组、一次两个 in pairs
一周一次/两次 once/ twice a week
一月一次/两次 once/twice a month
一周一到两次 twice a week ; One week or twice
一周一次到两次 Once to twice a week ; Once a week to twice
二年一次的两年一次的 biennial
一次或两次一周 once or twice a week
一周一或两次 A week or two ; Or twice a week
另外可以适当饮白酒，每周2次，一次一两。
Moreover may drink the white liquor suitably, each week 2 times, each time 50 gram.
海蒂知道，她可能还要一两个星期才能再来一次。
Heidi knew that it might be a week or two again before she could repeat her visit.
这些品牌鼓励注重时尚的消费者把衣服视为一次性的——意味着只能洗一两次（尽管他们并没有这样宣传），并且每隔几周就更新一次他们的衣柜。
These labels encourage style-conscious consumers to see clothes as disposable—meant to last only a wash or two (although they don't advertise that), and to renew their wardrobe every few weeks.
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