The drawbridge, also known as the suspension bridge, is
a bridge with the suspension cable bearing the tension
as the main load-bearing component. Because the
suspension cable is pulled, the stress can be reduced
without bending, and the high strength steel wire can be
made, so the span capacity of the suspension bridge is
the biggest in the bridge system.。
We moved forward slowly and nervously, staring at our
feet and moving step by step, and at that moment, the
bridge suddenly swayed violently. "Ah!" I screamed out.
My hands clenched tightly on the railing. Looking ahead,
I saw a few boys playing tricks deliberately, running
forward, so the bridge began to shake, and I was
frightened and timid.……
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