看绝望的主妇学英语高频短语：Once in a while

Once in a while: Occasionally, sometimes; Sometimes but not very often; From time to time. Synonym: once awhile; now and then; from time to time; occasionally; on occasion;  sometimes;  at times;  now and again.
As in My mom has sweets once in a while but mostly eats only healthy foods.

中文释义：once in a while是偶尔，有时的意思，表示在一段时间里偶尔会做某件事但频率不是很高。比如：My mom has sweets once in a while but mostly eats only healthy foods. （我妈妈偶尔吃点甜食，但大部分都是健康食品。）另外，有很多短语跟它意思相近，例如：once awhile; now and then; from time to time; occasionally; on occasion; sometimes（发生的频率比”once in a while”高）;  at times;  now and again.