preventive
adj
prɪˈventɪv
adj
1
intended
to
stop
something
you
do
not
want
to
happen,
such
as
illness,
from
happening
预防（性）的，防备的
preventive
health
programs
预防性的保健计划
preventive
action/measure
While
travelling
abroad,
take
preventive
measures
to
avoid
illness.
在国外旅行时，要采取预防措施以免患病。