listening device 的近义词 5 个

• ear trumpet
• electronic hearing aid
• hard-of-hearing aid
• transistor hearing aid
• vacuum-tube hearing aid

listening device 的近义词 9 个

• bug
• handset
• headphone
• radio
• telephone
• television
• control center
• detection device
• transceiver

listening device 的反义词 2 个

• donor
• giver