every
every so often
用:也说every now and again}then o
意:偶尔;不经常:时常,不时地
例 .Every so often, she spends a weekend in the country.
她时不时地在乡间过个周末。
Every so often, we go to the cinema.
我们时不时地去看场电影几
We see each other emery now and again, but we're not close friends.
我们虽说时常能见面,但不是亲密的朋友。