单词	第一寻线器
释义	第一寻线器 first line selector
随便看	at someone's at the hands at someone's back at someone's beck and call at someone's behest at someone's bidding at someone's command at someone's disposal at someone's disposition at someone's doorstep at someone's elbow at someone's expense at someone's feet at someone's hand of someone at someone's hands of someone at someone's heels at someone' s peril at someone's pleasure at someone's request at someone's service at someone's tail at someone's whistle at some or other at some place at some point At some point our cell phones let us down