This building is the same: the concrete shell, the womb of construction, was built in probably less than nine months.

这座建筑也是一样：混凝土外壳，建筑的子宫，可能在不到九个月的时间内建成。

Like the cylinder, the vault is encased in a massive and thick steel and concrete shell, and the security forces inside specifically look for ground vibrations around it.

和钢柱一样，金库也被包裹在巨大厚重的钢筋混凝土外壳中，里面的安保部队专门检查周围的地面振动。

At the other end of this lab is where the clock signals come in, so the hydrogen maser is in the bunker that's underneath here in its concrete shell, and it sends up its reference tone 10 megahertz signal.

在这个实验室的另一端是时钟信号输入的地方，所以氢脉泽在它下面的混凝土外壳中的掩体中，它发送它的参考音调 10 兆赫兹信号。