dial back的相關(guān)資料：
臨近單詞
dialup
dial
dialkyl alkylene diphosphonic acid
diallyl dimethyl ammonium chloride
dial service auxiliary switchboard
dial service assistance switchboard
dialytic ascitic ultra-filtration
dialphamethylbenzyle thylenediamine
dial indicator measuring instrument
Dial Tone Continues After Off-Hook
dialed number identification service
dial teletypewriter exchange service
