可数名词：

1.钥匙

2.图例，题解

3.（解决问题的）线索，秘诀，答案

4.（钢琴，打字机等的）键

5.【音】调

6.关键，要害，关键人物

及物动词：

1.锁上，插上

2.【音】为……调音

3.用键盘输入（信息等）(+in/into)

a.重要的，基本的，关键的

英语解释

provide with a key

effective; producing a desired effect

regulate the musical pitch of

vandalize a car by scratching the sides with a key

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

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

something crucial for explaining

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

a list of words or phrases that explain symbols or abbreviations

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

pitch of the voice

metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated

a lever that actuates a mechanism when depressed

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

serving as an essential component

identify as in botany or biology, for example

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)

any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music