a system or a piece of electrical equipment that allows people in different parts of a building, aircraft, or ship to speak to each other 内部通话设备;内部通话系统;对讲机
over the intercom:
The captain had explained the situation over the intercom. 船长已经通过对讲机说明了情况。
INTERCOM + VERB | INTERCOM + NOUN | PREPOSITIONINTERCOM + VERB➤buzz, crackle內部通話設備嗡嗡響/咔咔響▸➤sound內部通話設備發出聲響INTERCOM + NOUN➤system內部通話系統▸➤button內部通話系統按鈕PREPOSITION➤on the intercom利用內部通話系統◇I spoke to her on the intercom.我用內部通話系統和她通了話。➤over the intercom通過內部通話設備◇Mr Jack's arrival was announced over the intercom.傑克先生到達的消息是通過內部通話設備宣佈的。