样品推车lab cart 定时钟traceable timer 秒表stopwatch 油脂取样器oil sampler 液体取样器liquid sampler 原粮扦样器needle-point sampler 取样铲...
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He carries it in his lab coat pocket or his briefcase, which is much more convenient than his medical center's ultrasound machine, housed on a cart in the operating room.
相对于医疗中心手术室那台庞大的超声设备来说，它无疑方便许多。
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