I have a pendulum, and the pendulum at time t equals zero.(我画一个单摆，在这一点t为零。)
Here is the pendulum.(这是摆锤。)
Words like "acid", "gravity", "electricity" and "pendulum" had to be invented just to stop their meetings turning into an endless game of charades.(像“酸”，“重力”，“电”和“钟摆”这些词不得不被发明出来，只是为了防止他们的会议变成一场无止尽的字谜游戏。)
Let's start with the pendulum.(让我们以摆开始。)
Big Ben's timekeeping is strictly regulated by a stack of coins placed on the huge pendulum.(大本钟的计时是由放置在巨型钟摆上的一堆硬币严格调节的。)
Encompassed in a luminous cloud, of which he was now merely the fiery heart, he swung through unthinkable arcs of oscillation, like a vast pendulum.(他现在只不过是一颗火热的心，被一团发光的云所包围，他像一个巨大的钟摆一样，在不可思议的摆动的弧线上摇摆。)
By the 16th century, a pendulum clock had been devised, but the pendulum swung in a large arc and thus was not very efficient.(到了16世纪，人们发明了摆钟，但钟摆摆动的幅度很大，因此效率不高。)
For the pendulum, center of mass is here.(对摆来说，重心在这里。)
In short, the shinbashira was acting like an enormous stationary pendulum.(简而言之，这个中心支柱就像一个巨大而静止的钟摆。)
