Definition: someone or something that is used for achieving something Level: C2
互联网是一种强大的全球交流工具。
The Internet is a powerful ___instrument of global communication.
新的监控系统被视为国家控制的工具。
The new surveillance system was seen as an ___instrument of state control.
法律应作为实现社会正义的工具，而非压迫的手段。
The law should serve as an ___instrument for social justice, not oppression.
