bell ringer扭转干坤;打开局面;撞钟人;敲钟
ringer panel振铃器盘
Ringer Solution林格液;复方氯化钠注射液;氏溶液
Double Ringer双套环
harmonic ringer选频铃
RINGER SW响铃开关
ringer box电铃盒
unbiased ringer非极化电话铃;非偏动电铃
Ringer Mute静音
PHRASE(习语) If you say that one person is a ringer or a dead ringer for another, you mean that they look exactly like each other. 容貌酷似的人; 长得一模一样的人 [非正式][usu v-link PHR 'for' n]