１）instrument /ˈɪnstrumənt; ˋɪnstrəmənt/ n
implement or apparatus used in performing an action, esp for delicate or scientific work 器具; 器械; 仪器
a surgicalinstrument, eg a scalpel 外科器械（如手术刀）
an opticalinstrument, eg a microscope 光学仪器（如显微镜）
instruments of torture 刑具.
apparatus for producing musical sounds, eg a piano, violin, flute or drum 乐器（如钢琴﹑ 小提琴﹑ 笛或鼓）
learning to play an instrument 学习演奏乐器
the instruments of the orchestra 演奏管弦乐的乐器.
measuring device giving information about the operation of an engine, etc or in navigation （发动机等或航海﹑ 航空中用的）测量仪器, 仪表
a ship’s instruments 船用测量仪器
[attrib 作定语] an instrument panel 仪表盘.
(a) ~ of sb/sth person used and controlled by another person, organization, etc, often without being aware of it 受人利用或控制的人（常为不自觉的）
eg：We humans are merely the instruments of fate. 我们人类只不过是天命的工具.
(b) ~ of sth person or thing that brings sth about 促成某事的人或物
eg：The organization he had built up eventually became the instrument of his downfall. 他创建起来的组织到头来却成为促使他倒台的根本原因了.
~ (of sth) formal (esp legal) document 正式的（尤指合法的）文件﹑文书
eg：The king signed the instrument of abdication. 国王签署了逊位的文告.
２）instrumentation / ˏɪnstrumenˈteɪʃn; ˏɪnstrəmɛnˋteʃən/n [U]
1 arrangement of music for instruments 为器乐的 编曲
eg：The instrumentation is particularly fine. 这首器乐曲编得特别细致.
2 instruments (instrument 3) 测量仪器; 仪表
monitoring the spacecraft’s instrumentation 监控宇航器的检测仪表.