an electronic system in a public place, for example a theatre, that sends a signal to people who wear a particular type of hearing aid so that they can hear more clearly

The theatre is equipped with an induction loop for the hard of hearing. 剧场为有听觉障碍的人士准备了感应环路助听系统。

Organizers should notify the University as to whether the induction loop facility is required in the Hall during the ceremony. 主办方应该通知大学是否需要在仪式进行期间在礼堂内安装感应环路助听设备。