av och till betyder på engelska

now and then▼((idiomatic) sometimes; occasionally; intermittently)
adverb
[UK: naʊ ənd ðen] [US: ˈnaʊ ænd ˈðen]

sometimes▼(on certain occasions, but not always)
adverb
[UK: ˈsʌm.taɪmz] [US: səm.ˈtaɪmz]