They have complete physical systems to deliver the poison, including specialized poison glands, fangs, body muscles and nervous systems.
(They; have; complete physical systems to deliver the poison, including specialized poison glands, fangs, body muscles and nervous systems) Context(They have,List([0, 9))):(They; have to deliver; the poison)
They have,List([0, 9))
They They
have have to deliver
complete physical systems to deliver the poison, including specialized poison glands, fangs, body muscles and nervous systems
the poison