其实监狱有两把锁，一把内锁，一把外锁。

Now this jail has got two locks, one inside, one outside.

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内锁式安全门设计，开门即停止，确保安全。

Inner-lock safety door, once open, machine stopped immediately to ensure operator safety.

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向锁内看，我看到有人用口香糖堵住了锁。

Peering inside the lock, I see that someone has jammed chewing gum into the lock.

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说明内泄出自动臂缸的控制阀及锁死平衡阀。

Note automatic leak control arm cylinder valve and locked balance valve.

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说明内泄出自动臂缸的控制阀及锁死平衡阀。

Note automatic leak control arm cylinder valve and locked balance valve.

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