The first Bridges made by humans were probably spans of cut wooden logs or planks and eventually stones, using a simple support and crossbeam arrangement.
而人造桥则是由切段原木或是厚木板、石头搭建起来并用横梁做支撑的拱。
2
DRILLING tunnels beneath the wooden pillars that support one of Europe's oldest cities sounds mad.
在欧洲最古老城市的地下钻隧道——这个城市还是由木质地桩支撑起来的——听起来有些疯狂。
3
The wooden structure as a skeleton is the support for different skins, textures, shadows and lights.