A lock and key come with each bicycle.

每辆自行车都附有一把锁和钥匙。

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He took a small key from his pocket and slowly inserted it into the lock.

他从衣袋里掏出一把小钥匙，然后缓缓地将其插入锁孔里。

《柯林斯英汉双解大词典》

I keep a lot of things under lock and key - most foodstuffs, cleaning materials, the hamster.

我把家里的很多东西都锁起来- - -大多数是食品，洗涤用的东西，还有我们养的仓鼠。

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Google keeps its search formula under a lock and key the same way Coca Cola safeguards its recipe.

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The entrance uses a number pad instead of a lock-and-key system.

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Ports for micro-USB and a 3.5mm headphone jack sit up top, with the volume rocker and lock key on the right and a covered slot for microSD or, in the case of the (gold) 308, a second full-sized SIM on the opposite edge.

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