7.30,2112.7.31,a key to a lock.

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一个锁的一把钥匙.
介词 to 可以表示“属于/通向”,如：
the door to the house 家门
a road to the city 通往那个城市的一条路
railways to Beijing 到北京的铁路
a private secretary to the minister 部长的私人秘书

哪里看到的……求前后文及背景

7.30,2112.7.31,a key to a lock. a key lt's a key key key It's a key.对a key提问 It is a key缩写 A key 翻译成中文 a low-key approach是什么意思 a set of ____(key). press a key什么意思 It is a key a key提问对 a key 提问 there is a key and a book This is a white key 的提问This is a white key ,对“a white key 进行提问 This is a key改为一般疑问句? a golden key can open any door This is a key.(变为复数) this gate requires a key to