All the prisoners are under close guard.
所有的犯人都在严密的看守之下。
As you lift the saw, the spring-tensioned telescoping guard will automatically close under the blade.
抬起圆锯后，弹簧绷紧压入的保护罩会自动在锯片下方关闭。
As you lift the saw, the spring-tensioned telescoping guard will automatically close under the blade.
抬起圆锯后，弹簧绷紧压入的保护罩会自动在锯片下方关闭。
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