every so often - occasionally, sometimes 偶尔，有时，不时
"My friend eats chocolate every so often but not usually."
"You should stand up every so often when you are on a long plane trip."
"We go to the small restaurant every so often."
every so often - occasionally, sometimes 偶尔，有时，不时
"My friend eats chocolate every so often but not usually."
"You should stand up every so often when you are on a long plane trip."
"We go to the small restaurant every so often."
