As it turns out, the tower's strength is largely due to that near-forgotten puddle iron — the engineers estimate that the tower will still be standing for at least another two or three centuries.
工程师预计埃菲尔铁塔至少还会继续屹立2到3个世纪。
As it turns out, the tower's strength is largely due to that near-forgotten puddle iron — the engineers estimate that the tower will still be standing for at least another two or three centuries.
工程师预计埃菲尔铁塔至少还会继续屹立2到3个世纪。
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