Bàn phím:
Từ điển:
Anh - Việt
Việt - Anh
Pháp - Việt
Việt - Pháp
Đức - Việt
Việt - Đức
Việt - Việt
Na Uy - Việt
four-group
four-handed
four-horse
four-horse(d)
four-in-hand
four-legged
four-letter word
four-limbed
four-master
four-oar
four-o'clock
four-part
four-pence
four-pin
four-place
four-ply
four-pole
four-post
four-poster
four-pounder
four-seater
four-square
four-stage
four-stroke
four-way
four-wheel
four-wheeler
fourchette
fourfold
fourgon
four-group
(đại số) nhóm bốn, nhóm Klein