The evaluation criteria for rationality of practice should be defined respectively according to the three indispensible parts:rationality of end, rationality of instrument and rationality of value.

实践合理性的评价标准应当从实践合理性三个不可或缺的组成部分（目的合理性、工具合理性、价值合理性）分别加以考察。

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The instrument is not that important. It's only a means to an end.

乐器不是那么重要，乐器只是达到目的要用的手段。

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Money is an instrument rather than the end.

金钱只是一种手段，而不是最终目的。

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And not just a camera but there are also tools on the end of these things so you can cut and you can do manipulations through this instrument.

除了摄像头外,在关节镜的末端还有其他的器械,你可以体外操纵这些器械进行切割等操作

耶鲁公开课 - 生物医学工程探索课程节选

Wheels, instrument panels and front-end modules are delivered in the same manner, but they don't arrive on trucks.

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In this way she rescued abstract painting, making it once again an instrument of meaningful expression rather than an end in itself.

WSJ: Helen Frankenthaler | Push Past Abstraction | By Eric Gibson

In Phyfe's lyre-back chairs, the lyre features a key-ended tuning pin on the right side and a peg-shaped end on the left, suggesting an authentic musical instrument rather than a mere design motif.

WSJ: Duncan Phyfe | Furniture for a Young Nation | By Barrymore Laurence Scherer