key 英[ki:] 美[ki]
n. 钥匙; （打字机等的） 键; 关键，线索，秘诀; （音乐的） 调。
vt. 键入; 锁上; 调节…的音调; 提供线索。
vi. 使用钥匙。
一、例句
他打开了手电筒，寻找钥匙。
He turned on the torch to look for his keys.
我丢掉钥匙之后，真正遇到了麻烦。
I was really up the creek when I lost my keys.
他由于忘了带钥匙，便以简单的应急办法从窗户爬进屋里。
As he had forgot his keys, he got into the house by the simple expedient of climbing through the window.
我突然想起我没有带钥匙。
I suddenly remembered that I didn't bring my key.
别忘了还我钥匙。
Don't forget to return my keys.
别把钥匙弄得叮当乱响。
Stop jingling your keys like that.
他把钥匙放在了传达室。
He put the keys in the porter's lodge.
二、短语
钥匙包-key case
钥匙插管-key pipe
钥匙定位钉-broach
钥匙挂板-keyboard
钥匙环-key ring
钥匙夹套-keytainer
钥匙孔-keyhole
三、近义词
n. （打字机等的）[机]键；[计]关键；[五金]钥匙
digital , crux。
vt. 键入；锁上；调节…的音调；提供线索
lock , keyboard。
adj. [计]关键的
pivotal。