"I suppose the first really significant thing that the world heard about was chimpanzees using and making tools.

VOA: special.2009.11.18

let's try and analyze this game using the tools we've learned so far.

我们先用已经学过的知识,来分析这个博弈

耶鲁公开课 - 博弈论课程节选

The artist can shape the hot glass using metal tools such as jacks, tweezers and shears.

VOA: special.2009.09.16

Some 3,600 firefighters are attacking the flames in steep terrain, using bulldozers, tractors and hand tools.

VOA: standard.2009.09.01

"But the important question is whether or not you need that information and our view very strongly is that,you know, all of that type of information that is relevant to the conservation and management of whales can be gathered using new and very powerful non-lethal tools."

VOA: standard.2010.01.05