1. Would you please stop at the grocery store and pick up some tissues, toothpaste and soap?
    能否请你在杂货店里停一下,买一些牙膏,卫生纸和肥皂?

2. Would you please stop at the grocery store and pick up some tissues, toothbrush and soap?
    能否请你在杂货店里停一下,买一些牙刷,卫生纸和肥皂?

3. The UPC is printed by the manufacturer on each grocery item — a set of thin and thick vertical stripes accompanied by a series of numbers under the stripes and a zero, centered to the left of them.
    条形码由厂家印在每一食品上——这是一组粗细不同、垂直排列的线条，线条下方有一组数字，左边有一个“0”字。

4. As the grocery items moves along the conveyor belt, the checker passes each item over a glass plate in the counter top, making sure that the UPC symbols can be read by the laser beam under the glass.
    食品杂货经传送带传到收款员跟前，收款员随即将每一物品搁在柜台上的一块玻璃板上一扫，好使板下的扫描机阅读条形码。