on hand片語KK [ɑn hænd] /ɑn hænd/發音片語1現有、備有、手頭上We always keep extra batteries on hand for emergencies.我們總是備有多餘的電池以防萬一。2在場、到場、隨時待命Several nurses were on hand to help the injured passengers.有幾名護士在場協助受傷的乘客。3待處理、手頭待辦She finished the work on hand before taking a break.她把手頭的工作做完才休息。