English ⇄ Greek +

English thesaurus
4× abbr.
abbr., auto.	all-wheel drive (MichaelBurov); four-wheeled drive (MichaelBurov); full 4x4 operation (MichaelBurov); four by four (MichaelBurov); four-by-four (MichaelBurov)
4 abbr.
abbr.	hard (rewision)

4,4'-?????vo : 1 phrase in 1 subject

Chemistry

1