megaphones的音标：...

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....

n.扩音器( megaphone的名词复数 )...