Should a motorway pass under or over a large waterway? Up till about 1960 the only alternative was bridgingover or tunnelling under the waterway.
公路应该从江河的下方还是上方通过?直到1960年左右所能选择的方案只是水上架桥法或水下开凿隧道法。
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On the first day of my university life, when I walked into the campus, there was a rainbow bridgingover the fountain, I hadn't seen rainbow for a long time.
In this paper, a theoretical analysis and experiment surveys are presented for simulating crack prevention by bridgingover near crack tip under electromagnetic heating effect.