transmitter
noun
trænzˈmɪtə
noun
1
equipment
that
sends
out
radio
or
television
signals
〔发送无线电或电视信号的〕发射机， 发报机
2
someone
or
something
that
passes
something
on
to
another
person
or
thing
[正式] 传送者，传输者，传播者，传播媒介
formal
[+
of
]
What
is
the
main
transmitter
of
the
virus?
这种病毒的主要传播媒介是什么？