扩音器( megaphone的名词复数 );
The conference hall was installed with radio sets and megaphones.
会场里设置了收音机和扩音器.
When the gates finally opened we filedandinto lines by official women shouting through megaphones.
进站的门一开,我们便一涌而上,有个妇女对着喇叭大声叫我们排好队.
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