1、tool英[tu:l]美[tul]器具，工具;（有助于做工或完成某事的）用具;受人利用的人;压印机。

2、例句。（1）He became the tool of the security services.他成了安全部门的工具。

（2）There is often an inverse relationship between the power of the tool and how easy it is to use. 工具的功能越强大，操作起来往往越费事。