FIFA 官方是这么定义的:% D9 m2 B, b p4 j1 H/ \: T
: ^; z l* i/ A& X) V/ m) s
Children two years and under at competition time& t c. @* C0 X0 Z/ t" M
(June/July 2015) do not require their own ticket for 6 Z- T+ E" S" {. u0 r+ N: t: Sentry but must sit in a guardian’s lap and not take up! G' s$ \" L# N; d* R
an additional seat of their own. - [/ Z9 a B- r9 N! F