while I'm/you're etc at itspoken used to suggest that someone should do something while they are doing something else 趁我/你等在做某事的时候顺便〔用于建议别人做某事〕 I’m just going for a cup of coffee. Shall I bring you one while I’m at it? 我正要去喝杯咖啡，要不要顺便给你带一杯？
→ while I’m/you’re etc at it at at(2)