key的英语正确写法？
n. 键；关键；钥匙；答案adj. 关键的；主要的
vt. 键入；用钥匙锁上；为 ... 调音
[C]钥匙
metal instrument shaped so that it will move the bolt of a lock
[C]关键,要诀
thing that provides access, control or understanding
[C]键
any of the set of levers that are pressed by the fingers to operate a typewriter, piano, etc.
[C](乐曲的)调; 口吻,基调
set of related notes, based on a particular note, and forming the basis of a piece of music; general tone or style of sth
