key 1/kiː/
n.keys1. 钥匙We have a key for the door of the house and a key for starting the car.我们有房间门的钥匙和发动汽车的钥匙。
2. 键the keys of a piano钢琴琴键
the keys of a typewriter打字机键
3. 解答；答案a key to the grammar exercises语法练习答案
4. 重要的人或物The key for the eighty-year-old professor to keep fit is to jog three kilometres every morning.这位八十高龄的教授保持身体健康的关键就是他每天早上慢跑三公里。
a key man关键性人物
5. 〈音〉调6. 〈植〉翅果