几年前，当我在本地一家医院前台志愿服务的时候，进来一位快递员，问实验室在哪儿，因为他有一个急件要递送。
A few years back, when I was volunteering at a local hospital's front desk, a delivery Courier came in and asked where the lab was, since he had a rush delivery.
几年前，当我在本地一家医院前台志愿服务的时候，进来一位快递员，问实验室在哪儿，因为他有一个急件要递送。
A few years back, when I was volunteering at a local hospital's front desk, a delivery Courier came in and asked where the lab was, since he had a rush delivery.
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