The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards.

真正安全的系统只能关机断电，放到一个混凝土浇注的建筑物中的一个密闭的房间中，并配备警力进行守卫。

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Before we can do anything String-specific with that retrieved value, we have to cast it to a String, even when the retrieved element was added in the same code block!

在对检索到的值进行任何特定于String的操作之前，必须将它强制转换为String，即使是将检索到的元素添加到同一代码块中，也是如此！

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The engine crankcase and block are usually cast into one piece and therefore can be seem as the largest and most intricate piece of metal in automobile.

发动机曲轴箱和气缸体通常铸造成为一体，因此算作汽车中最大且最复杂的金属结构。

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