"key" 的定义和意义

something crucial for explaining

pitch of the voice

a set of notes based on a particular note that form the tonal basis of a musical passage

mechanical device used to wind another device that is driven by a spring (as a clock)

the central building block at the top of an arch or vault

a generic term for any device whose possession entitles the holder to a means of access

a list of symbols that accompanies a table, map, etc. as a reference for further explanation

a list of answers to a test

(basketball) a space (including the foul line) in front of the basket at each end of a basketball court; usually painted a different color from the rest of the court

a coral reef off the southern coast of Florida

United States lawyer and poet who wrote a poem after witnessing the British attack on Baltimore during the War of 1812; the poem was later set to music and entitled `The Star-Spangled Banner' (1779-1843)

a winged often one-seed indehiscent fruit as of the ash or elm or maple

a kilogram of a narcotic drug

harmonize with or adjust to

regulate the musical pitch of

vandalize a car by scratching the sides with a key

provide with a key