A professional musician sees their instrument as an extension of themselves rather than as a device they manipulate.
职业音乐家将手中的乐器视为自己身体的一部分，而不是他们操纵的某种设备。
2
I think a credit instrument is a written evidence of the extension of a loan.
我认为信用工具就是发放贷款的书面证明。
3
The principle of feedback extension in t resistance network and the estimation method of measuring parameter are analyzed. The indeterminate of the instrument is discussed.