n. metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated
n. something crucial for explaining
n. pitch of the voice
n. any of 24 major or minor diatonic scales that provide the tonal framework for a piece of music
n. 钥匙, 键, 解答, 关键, 要害, 基调, 线索, 答案, 暗礁
vt. 调音, 锁上, 提供线索
vi. 使用钥匙
[计] 键, 密钥
1. She lost the key to her apartment.
她丢了公寓的钥匙。
2. This is the key to solving the problem.
这是解决问题的关键。
3. Can you please give me the key to your car?
你能把你的车钥匙给我吗？