The connection concerning sets founded by ? is called inclusion or containment. Equality between sets is usually expressed with regards to subsets.B?n có th? ch?n th?c ??n s?n có ho?c ??a ra yêu c?u riêng, c?a ti?m s? t? v?n k? l??ng và ?i?u ch?nh linh ho?t ?? ?áp ?ng tr?n v?n mong mu?n c?a gia ch?.Sensible Vocabulary: linked terms and phrase