偶尔 英语确切的说法

用词组吧
once in a while
once in a way

at intervals
at times
every now and then
every so often
from time to time
on occasion
periodically
sometimes
once in a while

偶尔
偶尔[简明汉英词典]
[ǒuěr]
1. between times
2. every once in a while
3. now and then
4. once in a way
5. once in a while

偶尔[汉英词典]
[ǒu ěr]
once in a while；occasionally