1. At last they found a string of diamonds which seemed to them exactly like the other they were looking for.
    最后，他们终于找到了一条在他们看来与所要找的那条完全相同的钻石项链，

2. As it swung back and forth, he walked quickly to the other string and drew it as far forward as it would reach. Then he caught the swinging string when it passed near him and tied the two ends.
    在绳子来回摆动的时候，他迅速走到另一根绳子那儿，将其尽量向前拉。当摆动的绳子靠近他时，他把它抓住，于是将两根绳子就系到一起。

3. She was wearing a string of green beads.
    她戴着一串绿色的珠链。

4. One college student tied the pliers to one string and set it in motion like a pendulum.
    一位大学生把钳子系到一根绳子上，然后让它像钟摆那样摆动起来。

5. It's cheaper to build radio towers than to string lines across mountain ridges,
    建造无线电发射塔要比翻山越岭架设线路更便宜。