bullhorns
n.
手提式扩音器( bullhorn的名词复数 );
例句:
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Policemen with bullhorns urged journalists to move along.
来自VOA
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Despite the bullhorns and grungy harp it's barroom rock that should have stayed in the bar.
来自BBC
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The Nassau County police arrived soon after the call, and, using bullhorns, ordered everyone to get back behind the barriers.
来自NEWYORKER