[ǒu]
once in a while; occasionally
do it occasionally
偶爾為之
He comes to our room for a chat every once in a while.
他偶爾來我們房中閑談。
We see each other once in a long while.
我們偶爾見面。
I like playing football best, but occasionally I play table tennis, too.
我最喜歡踢足球，偶爾也打打乒乓球。