The second class will demonstrate hanging and focusing lights and ladder safety.

第二课将示范灯具悬挂、光和梯子安全。

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All emergency ladder safety chains shall be up at all times except when person is entering or leaving ladder.

所有紧急梯安全链要随时挂上，除人员正在进入或离开梯子时。

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Equipment platform ladder safety chains shall be and will be hooked only when someone is working on the platform.

设备平台梯上的安全链只有有人在平台上工作时应挂好。

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The next step up the ladder of relative safety is bonds, particularly U.S. Treasury bonds.

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He said the firefighters placed a ladder up to the window and brought the man to safety.

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We also need to improve our safety nets to help children at the lowest end of the socioeconomic ladder do better, even before they are born.

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