In this task, you are given a sentence or phrase in Xhosa. You must translate it to English in a way that is equivalent in terms of meaning and grammatically correct.

Ithiyori yokufola, iseti yoo-akukhonto oknaye izinto ezikhoyo ezininzi ezilindele ukuncedwa zizibonelelo zeenkonzo. [DIS; IEEE]
Queuing theory, a set of zero or more entities waiting to be serviced by a service facility. [DIS; IEEE]

Kwezinye iinqanawe kwiminyango embalwa okanye izivuli ezinokulawulwa ngempawuzolawulo elungangenisi manzi kodwa ekufuneka zivulelwe ukujikeleze komoya.
In some ships on a very few doors or hatches which would normally be governed by a watertight control marking but which must be open for recirculation of air.

Isangqa sokujika kwakhe singaba sikhulu

Her turning circle can be very big.