docking station
noun [ C ] uk/ˈdɒk.ɪŋ ˌsteɪ.ʃən/ us/ˈdɑː.kɪŋ ˌsteɪ.ʃən/ (also dock)
（电器）扩展坞
a piece of electrical equipment to which another piece of equipment can be connected
Put the MP3 player into the docking station to charge it. 把MP3播放器放在扩展坞上充电。