1. Will you please tie a rope in a firm knot?
    请你将绳子打一个牢固的结好吗？

2. With scarcely a glance at the items, the clerk sweeps them across an aperture, where a special marking on each item is scanned by a low-powered laser beam inside the machine, connected to a remote computer.
    收款员几乎不看商品，只是把商品从机器上的孔眼处一扫而过，机器里的低能量激光对商品上的一个特殊标志进行扫描，这台扫描机与另一台电脑相联。

3. The beam from a flashlight showed a beggar sleeping at his doorstep.
    借用手电筒的光, 他看到了一个睡在他家门口的乞丐。

4. The sunlight has faded my tie.
    阳光晒得我的领带褪了颜色。

5. The beam has begun to sag.
    横梁开始下垂了。

6. That candy store uses fancy tape to tie all packages.
    那个糖果店用各种花样的线带扎包裹。

7. That candy store uses fancy tape to tie all packages.
    那个糖果店用各种花样的线带扎包裹。

8. Tie a heavy weight at the end of a long piece of string.
    把一个重物拴在一根长绳子的一端，

9. The farmers showed us how to cut the rice and how to tie the bundles.
    农民教我们如何割稻子，如何打捆，我们很快就学会了，

10. The scanning laser beam was an ideal device for reading these markings, and so the Universal Product Code was born.
    能进行扫描的激光是一阅读这些标志的理想手段，因而通用条形码便应运而生了。