late 14c., "of the nature of an instrument," from Old French instrumental, from Medieval Latin instrumentalis, from Latin instrumentum (see instrument). Meaning "serviceable, useful" is from c. 1600. Of music, c. 1500; noun meaning "musical composition for instruments only" is attested by 1940. Related: Instrumentally; instrumentality.
权威例句
1. The last track on the CD is an instrumental.
CD上的最后一支曲目是一首器乐曲。
2. Jesse Jackson was instrumental in the release of some of the hostages.
其中一些人质得以获释多亏了杰西·杰克逊。
3. He was instrumental in bringing about an end to the conflict.
他在终止冲突的过程中起了重要作用。
4. In Polish the verb'to be'takes the instrumental case.