1. Despite an expanded search area, no trace has yet been found of the airliner.

2. A police trace would turn up nothing on its origin.

3. It even raises the chance that at least trace DNA may survive as well.

4. Any given program input will trace a single route through the graph.

5. They are inexpensive and hard to trace, and they can be profitable.

6. He tried to trace the IP address back to a firm, but had no luck.

7. They trace the image on paper and as they draw, the image is filled in on screen.

8. We trace those flights and we know this.

9. In Boston, investigators will attempt to trace remnants back to their point of sale or manufacture.

10. However, residents of Seoul carried on with daily activities with no trace of anxiety.

11. Then, trace amounts of chemicals are added to kill any bacteria that remain.

12. Leaving no trace is always a good policy while camping.

13. Experts trace that statistic to social conditions and a lack of female role models in politics.

14. They used curves to trace the position and velocity of moving objects.